The Last Roof Quote: a written price after your roof consultation.

Interlock Metal Roofing (PNW) Inc. does. We are the certified and exclusive Interlock® installer in Idaho, Oregon and Washington, in business since 1997, and we install one roofing system, the Interlock® aluminum roof made by Interlock Roofing. Our Idaho work is run from our office at 3295 W Elder St, Suite 209, Boise, and we serve Boise and the Treasure Valley first. Idaho General Contractor Registration (DOPL) #6181938. We have been BBB Accredited since November 3, 2011, with an A+ rating.

It depends on your roof, so we price each house in writing after a free consultation. The biggest factors are roof area, pitch and complexity (valleys, dormers, skylights and chimneys), what is under the old roof, the profile you choose, and options such as the Class A Fire Rated Available assembly and snow guards. We don't publish Idaho price figures: Idaho is a new market for us and we have no Idaho contracts to report yet. Prices vary job to job with structural and other conditions, and an in-home roof consultation is required for an accurate price.

Aluminum absorbs no water, so freezing nights and sunny afternoons have nothing to split, and its smooth surface sheds snow. Interlock's Slate, Cedar Shingle, Shake and Mediterranean Tile panels carry a UL 2218 Class 4 impact rating, verified by Intertek for Delta Building Products; large hail can still dent aluminum. Ice dams come from attic heat loss, not from the roof covering, and ice damming is a stated exclusion of the material warranty, so we look at insulation and ventilation with you.

Wind resistance is warranted to 120 mph when installed to manufacturer specification, and the panels lock to each other on all four sides with the fasteners concealed, so there is no loose edge for wind to lift. For wildfire, aluminum does not ignite, and Class A Fire Rated Available, as a complete assembly. No roof is fireproof: embers also collect in gutters, vents and gaps at the roof edge, so we go through those details with you, and storm and fire damage are excluded from the warranties as Acts of God.

Two. The manufacturer, Interlock Roofing, gives the Guardian Lifetime Limited Material Warranty on the aluminum material and its factory finish, for the original purchaser while they own the home, transferable once. Interlock Metal Roofing (PNW) Inc. gives the 10 Year Limited Labor Warranty on the workmanship of the installation, for the purchaser named on the certificate; one certificate covers Idaho, Oregon and Washington. They are separate documents with separate terms, and you can read both before you buy.

Yes. Idaho General Contractor Registration (DOPL) #6181938, issued by the Idaho Division of Occupational and Professional Licenses. Idaho registers contractors; it does not license roofers separately. We also hold Oregon Construction Contractors Board (CCB) License #130826 and Washington State Contractor Registration (L&I) #INTERMR75406. Look the Idaho registration up on the DOPL license search rather than taking a number on trust, and ask any contractor for a certificate of insurance that comes directly from their insurer.

Boise and the Treasure Valley first: Boise, Meridian, Eagle, Star, Kuna, Garden City, Nampa and Caldwell, from our Boise office. Elsewhere in Idaho, including Mountain Home, McCall and the mountains, the Magic Valley, eastern Idaho and north Idaho, call and ask: we will tell you plainly whether we can schedule your roof.

No. Interlock Roofing manufactures the panels and issues the Guardian Lifetime Limited Material Warranty on the material. Interlock Metal Roofing (PNW) Inc. is the installer that sells, installs and services them in Idaho, Oregon and Washington, and it gives you the 10 Year Limited Labor Warranty on the installation. They are separate companies.

In North America. The panels are manufactured by Interlock Roofing at its plant in Delta, BC, and installed in Idaho by Interlock Metal Roofing (PNW) Inc. The company that quotes your roof is the company that installs it and stands behind the workmanship.

None published yet. Idaho is a new market for us, and we will not show Idaho roofs or Idaho reviews until we have them. The company has installed Interlock® roofs in Oregon and Washington since 1997.

Yes, in Boise: 3295 W Elder St, Suite 209, Boise, ID 83705, (208) 842-4762. Sales visits are by appointment, at your home or on Zoom.

There are none yet: Idaho is a new market for us, and we won't put another state's reviews on an Idaho page. Our BBB profile is public, with an A+ rating, and it shows every complaint and our response.

Call our Boise office on (208) 842-4762 on weekdays, 9:00 AM to 5:00 PM, or use the free quote form. Toll-free: 1-866-733-5811. Sales visits are by appointment, at your home or on Zoom. Guardian material warranty claims go to guardian@interlockroofing.com, and service and labor warranty questions to pnwservice@interlockroofing.com.

Five aluminum profiles (Slate, Cedar Shingle, Shake, Mediterranean Tile and Standing Seam), also available in solid copper. Slate is the most popular, and Shake and Cedar Shingle are the usual choice when an owner wants to keep the look of a cedar roof. Every profile needs a minimum 3/12 roof slope. We bring samples to the consultation so you can see each one against your house.

Longer than the asphalt and cedar roofs it usually replaces, because aluminum does not rust or rot and absorbs no water. Aluminum has been known to last over 100 years; that is a property of the metal, not a promise. The written terms are the warranty: the manufacturer's Guardian Lifetime Limited Material Warranty covers the material and finish for the original purchaser while they own the home, and a transferred warranty runs to 50 years from substantial completion.

Aluminum. The roofs we install are heavy-gauge aluminum, and Solid Copper is the other option. Aluminum contains no iron, so it does not rust, and it absorbs no water and cannot rot, while steel depends on its coating to keep rust away. The manufacturer's ICC-ES evaluation report lists 3105-H24 and 3003-H24 aluminum alloys, and the aluminum has up to 95% recycled content.

Nine: Solid Copper, Copper Penny, Hunter Green, Black, Deep Charcoal, Musket Grey, Tile Red, Colonial Brown and Tudor Brown. The finish is the Alunar® coating system, a 70% PVDF coating designed and tested to meet AAMA 2605 and backed by a 30 Year Alunar® Coating Warranty, and the colors are rated by the Cool Roof Rating Council (CRRC). We bring samples to your consultation, because color on a roof reads differently under a gray sky than on a screen.

From the street it reads as a slate, shake or shingle roof. The Slate profile suits Tudors, Victorians and foursquares, the Shake profile has deep, hand-split shadow lines that suit Craftsman homes and cabins, and the Cedar Shingle profile has the flatter look of a sawn cedar roof. The best way to judge is on your own house: we bring samples and colors so you can hold them up against your siding and trim.

Yes. Solid Copper and Standing Seam are two of our six profiles, alongside Slate, Cedar Shingle, Shake and Mediterranean Tile, and every profile needs a minimum 3/12 roof slope. Solid Copper is often used on a bay window, porch or entry rather than a whole house, and it is priced differently, so ask for it as a separate line in your quote.

About 0.41 to 0.59 lb per square foot installed, depending on profile (ICC-ES ESR-1790), a fraction of the weight of concrete tile or natural slate. Replacing tile or slate usually takes weight off the house. We still check the deck and framing at the consultation and put anything that needs attention in the written quote.

3/12. Every Interlock profile needs a minimum 3/12 slope, and the manufacturer's ICC-ES evaluation report lists 3:12 with code-compliant self-adhered underlayment. If part of your roof is flatter than that, such as a porch or a low addition, that section needs a different roofing system, and we will point it out at the consultation so it is dealt with in the written quote.

It has a strong case. The aluminum in Interlock panels has up to 95% recycled content, and a roof that does not need replacing avoids the repeated tear-off waste of shorter-lived roofs. The colors are CRRC-rated, so their solar reflectance and thermal emittance are published.

Water that soaks into wood or works under a curled asphalt tab freezes, expands and widens the gap a little more each cycle, and Treasure Valley winters bring runs of freezing nights and sunny afternoons. Aluminum absorbs no water and cannot rot or split, and interlocked panels leave no tab edge to lift.

Large hail can. Interlock's Slate, Cedar Shingle, Shake and Mediterranean Tile panels carry a UL 2218 Class 4 impact rating, verified by Intertek for Delta Building Products, and the Guardian material warranty covers splitting, cracking and perforation from hailstones 1.5 inches in diameter or less; cosmetic dents are not covered. On June 26, 2026 a storm left several inches of small hail on the ground in northwest Meridian, so hail is a real question in the Treasure Valley.

Wind resistance is warranted to 120 mph when installed to manufacturer specification, under the manufacturer's Guardian Lifetime Limited Material Warranty. Storm fronts cross the open ground of the Snake River Plain and the Treasure Valley, and the panels lock to each other on all four sides with the fasteners concealed, which leaves no loose edge for wind to get under. Damage from severe weather and Acts of God is excluded, so read the exclusions before you buy.

It sheds it. The University of Idaho's 2015 ground snow load study lists 15 psf for Boise and 157 psf for McCall, so snow load depends on where you live; your building department sets the design load. Snow and ice can build up and release suddenly, so keep the area under the eaves clear while there is snow on the roof. Snow guards over entries, decks and walkways restrict how much releases at once, and we price them as a line item.

We won't promise that, and neither warranty does: ice damming is excluded from both the manufacturer's material warranty and our labor warranty. Ice dams come from heat loss. Warm air from the house melts snow on the upper roof, and the water refreezes at the colder eaves, so the fix lies in attic insulation, air sealing and ventilation. We look at those with you at the consultation, before we quote.

Interlock's Slate, Cedar Shingle, Shake and Mediterranean Tile panels carry a UL 2218 Class 4 impact rating, the highest class in that standard, tested and listed by Intertek under Delta Building Products, the manufacturing operation in Delta, BC. The manufacturer's material warranty covers splitting, cracking and perforation from hailstones 1.5 inches in diameter or less and excludes other hail damage, which is a matter for your home insurance.

Not on a house. The manufacturer's guidance is that on a home with solid decking, underlayment, an attic and insulation, rain noise is comparable to asphalt shingles. The noisy-roof reputation comes from open-framed barns and sheds, where rain hits a bare sheet with nothing under it. Our installs go over a solid deck.

Any roof can, and in a damp climate it is often mistaken for a leak. Condensation comes from high humidity and a lack of ventilation. Keep the attic and other roof cavities well ventilated and the eaves free of blockage; if condensation persists, have the ventilation, insulation and vapor barrier checked. Condensation is excluded from the manufacturer's material warranty, and we look at attic ventilation at the consultation.

The finish helps. Alunar® colors are rated by the Cool Roof Rating Council, so their solar reflectance and thermal emittance are published, and lighter colors reflect more of the sun. How much that changes your cooling during a hot, dry summer depends on your insulation, ventilation and the house itself, so we don't put a savings number on it. Ask to compare the CRRC values of the colors you like.

No. Lightning follows height, shape and isolation, not roof material, so it strikes the tallest point around: a tree, a pole, a chimney, a hilltop. The manufacturer cites the Metal Construction Association's technical guidance that a one-story home with a metal roof is no more likely to be struck than the same home with asphalt. Lightning damage is a home insurance matter.

Class A Fire Rated Available, as a complete assembly. Under ASTM E108 (UL 790) a fire classification belongs to the assembly, not the panel; on our roofs that assembly is Interlock aluminum over two layers of GAF VersaShield® on 15/32-inch plywood. Aluminum itself does not ignite. If you want the assembly, ask for it in your quote, where it is priced as a line item.

No roof is fireproof, and we won't call ours that. What we can offer is Class A Fire Rated Available, as a complete assembly, and aluminum that does not ignite. Idaho's Ready, Set, Go! guide calls the roof the most vulnerable part of a home because windblown embers lodge there, and embers also find gutters, vents and gaps at the roof edge, so if your house backs onto the foothills, rangeland or forest we go through those details with you at the consultation.

For as long as the original purchaser owns the home on which the roof was installed and remains the registered owner under the warranty. It is the purchaser's lifetime of ownership, not the life of the house, and it is a limited warranty on the material and its factory finish. It does not cover installation workmanship, which is covered separately by our 10 Year Limited Labor Warranty.

The Guardian Lifetime Limited Material Warranty transfers once, to the next registered owner, who is covered to 50 years from substantial completion. The transfer has to be registered with the manufacturer within 60 days of the change of ownership, with proof of purchase and a $300 transfer fee. Keep your registration and contract with the house papers. Our 10 Year Limited Labor Warranty is not transferable.

Ten (10) years from the Substantial Completion Date on your certificate, for the workmanship of the installation. It is issued by Interlock Metal Roofing (PNW) Inc., covers the purchaser named on the certificate while a named purchaser owns and lives in the home, takes effect once the contract is paid in full and is not transferable. It excludes the roofing material, which has its own warranty, ice damming, snow and ice shedding and the other listed exclusions.

It depends on where the water gets in. If the problem is in how the roof was installed, such as flashings, trim or a detail, it is a labor warranty matter for us. If it is a defect in the panels or their finish, it is a Guardian matter for the manufacturer. If you are not sure, email pnwservice@interlockroofing.com or call us first, and we will tell you which applies.

For workmanship, contact our service team at pnwservice@interlockroofing.com no later than 10 days after you discover the issue, with your name, address, phone number, certificate number and a description with photos. For the material, write to guardian@interlockroofing.com within 30 days of the issue becoming known, with your certificate number, photos and contact details. If you are not sure which applies, contact us first.

Read the exclusions before you sign. The Guardian Lifetime Limited Material Warranty excludes, among other things, installation workmanship, severe weather and Acts of God (including earthquake, fire, flood and lightning), hail damage other than splitting, cracking and perforation from stones 1.5 inches or less, condensation, ice damming, ice and snow shedding, the accumulation of dirt, mildew and other organic material, and normal wear including minor scratches and dents. The full document lists every exclusion.

Yes, and we would rather you did. The Guardian warranty document and the full 10 Year Limited Labor Warranty text are on our warranty pages, and we hand you both warranty documents with your quote.

Yes, the estimate is free, and there is no obligation. Consultations are by appointment, at your home or on Zoom. We go through profiles and colors with you using real samples, and you get a written price after your roof consultation, once the roof has been seen. What you do with it after that is up to you.

Your written price is based on what we can see and measure at your roof consultation. If we find something that needs attention, such as soft decking or a slow leak, we include it in the written quote before you sign. Anything that can only be seen once the old roof comes off is discussed with you and agreed in writing before extra work is done.

For an owner who wants to stop re-roofing, usually yes, though it costs more up front than an asphalt re-roof. We install one roofing system and don't install asphalt or cedar, so if you're comparing us with them you're comparing a roof you'll replace again with one that shouldn't need it. Interlock panels lock on all four sides with concealed fasteners, and aluminum absorbs no water, cannot rot and does not ignite. The trade-offs are the higher upfront price and the need for a trained installer.

Not at this time. Financing is offered in Oregon and Washington only. Ask us about payment terms when you get your written price.

From us. Interlock Metal Roofing (PNW) Inc. is the certified and exclusive Interlock® installer in Idaho, Oregon and Washington, and we sell and install the system as a complete roof, so the manufacturer's material warranty and our 10 Year Limited Labor Warranty come with it. Book a free consultation through the quote form or call our Boise office, and you get a written price after your roof consultation.

There is no fixed figure, because timing depends on the stock of the profile and color you choose, crew availability, the building permit where one is needed, the weather, and the size and complexity of the roof. We confirm the timing for your project in writing. Hips, valleys, dormers, skylights and chimneys each add flashing and time, and remote or mountain sites add logistics.

Often, yes, with the work planned around the forecast. We tell you at the consultation what the season means for your schedule, and if the weather is wrong for a tear-off, we will say so rather than rush it.

Only over a single layer of asphalt shingles, and only after inspection and where your city allows it (Nampa's reroof permit allows no more than two layers at completion). Cedar shingles and shakes, concrete tile and natural slate always come off. With one layer of asphalt, we inspect first to see whether a roof-over is suitable, because soft decking can be hiding underneath. Whatever the inspection finds is written into your quote.

In Boise, Meridian and Nampa, yes: Boise lists re-roofing as work that needs a building permit, Meridian lists roof replacement and repair, and Nampa has a reroof permit application for all reroof projects. Other cities and counties set their own rules. We confirm the requirements for your address and pull the permit as part of the job.

Often, but the decision is not ours. Boise has ten designated historic districts, and the city's Historic Preservation staff say exterior work there, including demolition of any part of a building such as the roof, needs a Certificate of Appropriateness before a building permit can be issued. Elsewhere, check with your city. We can supply profile samples, colors and product documents for the application.

Yes, including lake and mountain cabins. Long driveways, steep lots and seasonal access change the logistics, and we plan them at the consultation so they are reflected in your written price and install timing. Where the roof will carry snow, plan snow guards over the entries and the parking area, because snow slides off a metal roof.

Talk to us before anything is mounted. Damage from equipment added to the roof after installation is excluded from the manufacturer's material warranty, and work on the roof by anyone other than us may void our labor warranty, so bring us into the racking plan first.

Yes, skylights and chimneys are flashed as part of the roof, and each adds time that is reflected in the price. Point them out at the consultation, along with any vents, dormers or roof-to-wall joints, so every detail is in the written quote.

Very little, but not none. Have the gutters cleaned regularly and have needles, branches and other debris removed from the roof promptly, especially under tall firs and cedars. Rinse dirt or mildew from the ground with a hose and a well-diluted non-abrasive detergent. Keep attic ventilation working and the eaves clear. Unlike cedar, there is no re-treating, and unlike asphalt, there is no granule loss to watch for.

It is best avoided, for your safety and for the finish. Do what you can from the ground with long-handled tools, and hire a skilled professional for anything that needs roof access. Damage from foot traffic after installation is excluded from the manufacturer's material warranty, so call us first.

No. High-pressure washing is excluded by both warranties. Clean the roof from the ground by lightly hosing it down with a well-diluted non-abrasive liquid detergent and a long-poled soft-bristle brush, and remove debris with a long rope or pole. How fast dirt and mildew build up depends on slope, shade, trees and sun exposure.

Email our service team at pnwservice@interlockroofing.com or call the office. We can look at the damage and arrange the repair. Damage from wind storms, falling trees and other Acts of God is excluded from the material warranty, so it is usually a home insurance claim; photograph the damage before anything is moved.

No repainting is part of normal ownership. The factory finish is the Alunar® coating system, a 70% PVDF coating designed and tested to meet AAMA 2605, and it carries a 30 Year Alunar® Coating Warranty against chalking and fading beyond stated limits. Keep the finish in good shape by cleaning from the ground with a hose and a mild detergent, never a pressure washer, and by keeping foot traffic off the roof.

Yes, and the board usually leads it, because in most condominiums the roofs are common elements. State condominium law, together with your declaration and bylaws, sets out who is responsible for the roof and when owners have to vote. We can meet the board or the property manager, walk the roofs and provide a written price after the roof consultation, with the product documents, color samples and warranty terms owners will ask for.

Only with the association's approval, where the roof is common area or the exterior is controlled by the association. Get that approval in writing from the board before you sign anything, and check your declaration, bylaws and design rules for what they require. We can supply the specification sheets and warranty terms the board needs.

Where the property is owned by an organization, such as a condominium or an association, the Guardian warranty runs 50 years from substantial completion, including the 30-year coating warranty, and cannot be transferred. Our 10 Year Limited Labor Warranty is for the purchaser named on the certificate. We give the board the warranty documents in full with the quote; get legal advice where the declaration is unclear.

ICC-ES evaluation report ESR-1790, held by the manufacturer, Interlock Roofing. It evaluates fire classification, wind-uplift resistance and weather resistance for the Shingle, Diamond, Shake and Hidden Fastener Tile panels under the International Building Code and International Residential Code; it does not cover the Standing Seam profile. Acceptance rests with the local building official, so share the report early, and check the current version on the ICC-ES website.

Per the manufacturer's ICC-ES report, the aluminum shingle and diamond panels are 3105-H24 alloy at 0.019-inch base metal, and the shake and tile panels are 3003-H24 or 3105-H24 at 0.0276 inch. The finish is the Alunar® coating system, a 70% PVDF coating designed and tested to meet AAMA 2605, with CRRC-rated colors. Installed weight is roughly 0.4 to 0.7 lb per square foot depending on profile.

Class A Fire Rated Available, as a complete assembly: Interlock aluminum over two layers of GAF VersaShield® fire-resistant underlayment on 15/32-inch plywood, classified under ASTM E108 (UL 790) per ICC-ES ESR-2053. Specify the assembly, not the panel, because the classification belongs to the whole build-up, and ask us for it as a priced line in the quote.

The manufacturer's ICC-ES report ESR-1790 lists maximum allowable uplift loads that depend on the fastening system: up to 177.5 psf for the shingle and diamond panels, 142.5 psf for the hidden fastener tile panels and 115.0 psf for the shake panels. Check the current report before you specify. The Guardian warranty warrants wind resistance to 120 mph when installed to manufacturer specification.

Email sales@washingtonmetalroofing.com or call the office. The manufacturer publishes its test reports and certifications at interlockroofing.com, including the ICC-ES report, and our proof page hosts the warranty, the Intertek listing and the specification manuals. We can bring samples and colors to a design meeting, in person or on Zoom, and price the roof in writing once the drawings are far enough along.

Early in the design, before framing. Slope (minimum 3/12 for every profile), the Class A Fire Rated Available assembly if you want it, snow guard locations and the deck are much easier to settle on paper than after the trusses are up. Email sales@washingtonmetalroofing.com or call the office with the drawings, and we will confirm timing in writing.

A solid deck. For the Class A Fire Rated Available assembly, the deck is 15/32-inch plywood under two layers of GAF VersaShield®. The manufacturer's ICC-ES report sets a minimum 3:12 slope with code-compliant self-adhered underlayment. Confirm the deck and underlayment with us before framing so the roof goes on as specified.

Book the free consultation for a time you can both be there, at the house or on Zoom. We measure the roof, bring samples and answer questions, and you get a written price after your roof consultation, with no obligation. Before anyone signs, check the contractor the same way you would for yourself: a street address you can find, a state license you can look up, insurance from the insurer, and a warranty you can read in full.

The Guardian Lifetime Limited Material Warranty covers the original purchaser while they own the home, then transfers once to the next registered owner, covered to 50 years from substantial completion, with proof of purchase within 60 days and a $300 fee. Our 10 Year Limited Labor Warranty stays in effect while a purchaser named on the certificate owns and lives in the home, and it is not transferable; ask us to walk you through both before anyone signs.

A three-day right to cancel, among others. The Federal Trade Commission's Cooling-Off Rule (16 CFR Part 429) generally gives a buyer until midnight of the third business day to cancel a sale of $25 or more made at their home, and the seller must explain that right in writing. In Idaho, contractors must register with the Division of Occupational and Professional Licenses for jobs over $2,000 and give a written disclosure before a residential contract over $2,000. Keep deposits modest and get everything in writing.

Not much, and none of it needs a ladder if you plan for it. There is no re-treating as with cedar. Gutters need regular cleaning and debris should be removed promptly, ideally by a professional rather than a family member on a ladder. Dirt can be rinsed from the ground with a hose and a long-poled soft brush.

Check who you are dealing with before anyone books work. Look for a street address you can find on a map, an Idaho DOPL registration you can look up yourself, and a BBB profile. Be wary of anyone who knocks after a hail storm offering a quick deal. Make sure the quote, contract and warranty all name the same company, the one that installs the roof, and read the exclusions before signing.

That is up to your insurer, so ask them before you assume a discount. What we can give you is the documentation they may ask for: the Intertek UL 2218 Class 4 impact listing for the aluminum Slate, Cedar Shingle, Shake and Mediterranean Tile panels, the Class A Fire Rated Available assembly details if you choose it, and the manufacturer's warranty documents. Some insurers weigh impact or fire resistance; others do not.

We can't promise a number, and nobody honestly can. What a buyer gets is concrete: the manufacturer's Guardian material warranty transfers once, giving the next registered owner coverage to 50 years from substantial completion, if the transfer is registered within 60 days of the sale with proof of purchase and the $300 fee. Keep your registration and contract with the house papers.

Not for the roofing itself, as far as we know. If you are adding attic insulation while the roof is replaced, check your electric or gas utility's program requirements separately. Program rules change, so check before you rely on one.

Generally that is your home insurance, not the roof warranty. The manufacturer's material warranty excludes severe weather, Acts of God, impact of foreign objects such as a falling tree, and hail damage beyond the stated hail coverage. Check your policy, photograph damage before anything is moved, and email pnwservice@interlockroofing.com or call the office so we can assess the repair.

In the city's wildland-urban interface areas, yes. Boise City Code 5-12-53 adds a Wildland-Urban Interface chapter to the fire code: ignition-resistant construction calls for a Class A roof assembly or covering, and a replacement roof, or replacing 50 percent or more of the roof covering within 12 months, has to meet it. The fire code official keeps the maps and decides which lots are in. An Interlock® roof is Class A Fire Rated Available, as a complete assembly.