Engineered Wood Lap and Panel Siding by LP SmartSide

LP SmartSide siding in Calgary gives a house the look of painted wood with better impact resistance than vinyl. It is engineered wood, so the details decide how it lasts: sealed cut ends, Canadian clearances, proper flashing and paint on schedule, all to LP’s published installation instructions.

(587) 324-8484 How the job runs

Close view of painted sage green engineered wood lap siding with a deep cedar-like grain and a white corner trim board.

The Problem It Solves

A lot of Calgary homeowners want the warmth of a painted wood wall without living with cedar. The City of Calgary’s climate-ready guide notes that natural wood siding is prone to damage from wildfire, high winds and hail. Vinyl gives up the look and marks easily in a storm. Engineered wood sits between them. The same City guide credits engineered wood with good impact resistance compared with vinyl and aluminum, which is why it comes up when owners in hail-exposed areas plan a re-side.

The catch is that it is still a wood-based product, and it behaves like one when the details are wrong. In Canada, LP SmartSide is evaluated against the standard for oriented strand board, so the building code treats it as OSB cladding. A cut end left raw, a bottom course tight to a sloped roof or buried in a flower bed, or a board run into a gutter where meltwater sits all winter gives water a place to soak in. Those are installation faults, and they are where engineered wood problems usually start.

Paint is the other trap. SmartSide arrives primed, and LP asks for it to be painted as soon as possible or within 180 days. Stain and vinyl-based paints are ruled out altogether. Because LP’s warranty is voided if the siding is not installed and maintained to its instructions, a skipped detail or the wrong paint can cost an owner the warranty they assumed they had. The paint schedule is part of the installation, not an afterthought.

How It Works

LP treats every SmartSide product to the core through its SmartGuard process. LP describes the boards as engineered with waxes, resins and zinc borate for strength and resistance to fungal decay. LP backs the product with a 50-year prorated limited warranty that includes a limited hail-damage provision. Nothing makes it immune to large hail, and the warranty itself excludes storms with hailstones over 45 mm.

Our part is to install it the way LP’s instructions and the code require, so the treatment never has to fight standing water. That means a continuous weather-resistive barrier, kick-out flashing where roofs meet walls, Canadian clearances to grade and roofs, sealed gaps at trim and butt joints, and every exposed cut sealed by hand. The building code does not require a rain screen cavity in Calgary’s dry climate, but on shaded or wind-exposed walls we may recommend furring behind the boards so the back face can dry. We also schedule painting so the 180-day window is met.

How the Job Runs, Step by Step

Check framing and sheathing

LP says siding must not go on green or crooked studs, or over rain-soaked or buckled sheathing. We check both, confirm stud spacing, and use the 38 Series only where studs are at 16 inches or closer; framing at 24 inches calls for the 76 Series.

Weather barrier and flashing

A weather-resistive barrier goes over the whole wall. Kick-out flashing goes at every eave-to-wall intersection with 25 mm clearance at the gutter end, and step and other flashing gets an upper leg of at least 102 mm in a durable material.

Set the Canadian clearances

The bottom course sits at least 200 mm above grade and 50 mm above any roof surface. Decks, patios and walks get 25 mm, reduced to 10 mm only where the surface drains and is properly roofed, not just tucked under an eave.

Cut, seal and hang

Every exposed cut is sealed with a brushed coating, since LP does not recommend field spray on cuts. Butt joints and siding meeting window trim or door casings get a 5 mm gap and sealant, and boards never run into kick-out flashing or gutters.

Paint within LP’s window

We plan painting around the season so primed boards get their finish within 180 days, using a 100% acrylic topcoat. If a late-fall install would push painting past that window, we settle the schedule before the boards go up.

What Decides the Specification

Profile and framing come first. LP SmartSide is made as lap siding, panels, vertical siding and a Nickel Gap profile, and each suits a different look, from traditional horizontal lap to board-and-batten style panels on a modern farmhouse. The draw is a wood-grain look that reads as painted wood; which textures are offered in each profile is confirmed with the dealer before quoting. The lap series is tied to framing: 38 Series needs studs at no more than 16 inches on centre, while 76 Series allows 24. Panels bring the code rule for OSB-type cladding into play, which requires every edge to be supported, so battens and blocking are planned before the first sheet goes up.

Exposure and location decide the rest. LP SmartSide is combustible, so a wall close to a property line needs a limiting-distance and assembly check before it can be specified, and fibre cement or metal may be the only practical choice there. On a house hit by hail more than once, read LP’s hail provision closely. Shaded north walls, snow drifts at the base and roof-to-wall junctions shape the flashing detail and whether a vented furring cavity is worth adding.

Alberta Code Notes

Alberta currently enforces the National Building Code – 2023 Alberta Edition. LP SmartSide’s Canadian evaluation, CCMC 11826-L, assesses the products against CSA O437.0, the OSB and waferboard standard, which makes Subsection 9.27.10. the relevant cladding section. It requires panel edges to be supported and primed or sealed, with a 3 mm clearance to door and window frames; LP’s own instructions call for a 5 mm gap and sealant at window trim and door casings. LP’s Canadian instructions cite the code for their 200 mm clearance to grade and 50 mm to roofs. On walls within 1.2 m of a property line, wood-based cladding is only allowed in specific fire-rated assemblies, and we check before specifying it.

Changing from vinyl or stucco to engineered wood is a change of cladding type, so Alberta’s re-siding permit exemption may not apply. The City of Calgary treats exterior renovations case by case, Cochrane’s permit sheet lists replacing siding as not needing a permit but invites enquiries, and in Okotoks, Airdrie and Chestermere the municipality decides whether a change of cladding needs a permit. We confirm with the authority having jurisdiction before work starts.

General guidance only. The authority having jurisdiction and the product’s own evaluation report decide what applies to your job.

Around Calgary

Engineered wood suits the parts of our service area where owners want a wood look and the weather is hard on walls. In Cochrane, west of the city, the August 2024 hailstorm formed west of town before tracking into Calgary. Houses in communities such as Sunset Ridge and Heritage Hills benefit from a cladding with better impact resistance than vinyl, detailed carefully at roof lines where wind drives snow and rain against the wall.

Inside the city, engineered wood can sit alongside fibre cement and stone on newer and move-up homes. In a newer southeast community such as Walden, if a house already has engineered wood accents, we check the profile so new work sits comfortably beside them. Where an older northwest house has weathered cedar, it is one of the options worth pricing when an owner wants to keep a painted wood character but step away from the upkeep that cedar demands.

Common Mistakes to Avoid

Leaving boards primed only: Primer is not a finish. LP asks for paint as soon as possible or within 180 days, in 100% acrylic. Leaving a wall primed through a winter and summer risks the finish and the warranty.
Spray-sealing cut ends: LP says to seal all exposed cuts and does not recommend field spray-applied coatings on them. A quick pass with a spray can leaves thin spots where water can wick in.
Siding into the gutter: Boards run into a kick-out flashing or gutter sit in meltwater. LP’s instructions say not to do it and call for 25 mm of clearance at the gutter end.
Using US clearances: LP’s general figure to grade is 6 inches, but its Canadian instructions call for 200 mm to grade and 50 mm to roofs, matching the NBC. Canadian houses need the Canadian numbers.

When to Choose Something Else

Skip engineered wood on walls close to a property line, where non-combustible fibre cement or metal is simpler. If you want to avoid a repainting cycle, look at prefinished metal, because SmartSide is a painted product whose finish needs looking after. If your house sits where very large hail is a real risk, remember LP’s hail provision excludes hailstones over 45 mm and fibre cement is also worth comparing. And where a wall base cannot be kept clear of grade and snow, choose a cladding that is not wood-based.

Often Done Alongside

Rain Screen & Cavity Ventilation Systems

Furring or drainage mat leaving a drained, vented gap behind the cladding.

HardieBoard & HardiePlank Lap Siding

Smooth or wood-grain fibre cement lap planks, laid out course by course

Western Red Cedar & Natural Wood Siding

Western red cedar lap, tongue-and-groove, shingles and board replacement.

Where We Do This Work

LP SmartSide: Questions We Get

Does LP’s warranty cover hail damage?

Within limits. For products bought at retail on or after August 1, 2025, LP’s prorated 50-year limited warranty includes a hail-damage provision covering a crack or chip in the overlay, or a dent in the substrate, larger than 10 mm (3/8 in). It excludes storms with hail larger than 45 mm (1.75 in). You claim through your insurance first; LP then pays material only, no labour, less insurance proceeds and deductible, prorated. See LP’s current warranty for full terms.

Is LP SmartSide evaluated for use in Canada?

Yes. The National Research Council’s Canadian Construction Materials Centre lists LP SmartSide under evaluation 11826-L, covering Lap, Panel, Vertical, Nickel Gap and ExpertFinish products assessed against CSA O437.0. LP’s warranty applies to structures in Canada except Quebec, which has its own version, and LP publishes Canadian clearance figures in its installation instructions that match the National Building Code.

Why do you seal every cut end?

Because LP requires it and because the cut is where water gets in. The factory surface and SmartGuard treatment protect the board, but a saw cut exposes fresh strands. LP’s instructions say to seal all exposed cuts of siding and trim, and advise against field spray coatings. The building code also asks for OSB-type panel edges to be primed or sealed, so we brush sealer onto each cut.

How does it compare with Hardie board?

Both resist hail far better than vinyl. James Hardie fibre cement is non-combustible, which makes it the choice for walls near property lines, and the City of Calgary rates engineered wood as less fire-resistant than fibre cement. LP SmartSide is a wood-based product that needs careful sealing and clearances, but LP publishes a limited hail provision. For Hardie’s terms, see James Hardie Canada’s current warranty.

Do I need a permit to replace my siding?

It depends on the job, and the municipality decides: the City of Calgary, the Town of Okotoks, the City of Airdrie, the Town of Cochrane or the City of Chestermere. Under Alberta’s Permit Regulation, replacing siding with a similar type of siding, for maintenance or appearance and with no structural change, is generally exempt from a building permit. Changing the cladding type, adding exterior insulation, altering openings or repairing structure can take a project outside that exemption. We confirm with the municipality before work starts.

Considering LP SmartSide?

Call Calgary Siding Solutions or send the details. We will look at the job, tell you whether lp smartside is the right fix, and price it in writing.

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