Cladding
Heavy Duty Loglap Cladding
22mm nominal loglap — our thickest timber board, only on Heavy Duty.
Why we build with this
When someone wants their building to feel properly solid, loglap is what we reach for. At 22mm nominal it's a genuinely thicker board than standard shiplap, with a rounded profile that reads as chunky and substantial — and it carries the same 15-year anti-rot warranty as every timber building we make. It's the one change that defines the Heavy Duty range.
Dimensions
22mm nominal (19mm finished) Tanalised tongue-and-groove loglap board
Measurements
Loglap shown in cross-section — 22mm nominal, 19mm finished, rounded profile.
Nominal is the sawn size before the board is planed; finished is the actual thickness you receive, once it’s planed smooth (and, on cladding, cut to its tongue-and-groove profile). Every timber mill works this way — we publish both so you know exactly what you’re getting.
Heavy Duty steps the cladding up from 16mm to 22mm nominal loglap (19mm once it's planed to its finished thickness) — genuinely thicker timber, with a rounded tongue-and-groove profile rather than shiplap's flat overlap. It's the only difference between standard and Heavy Duty: same frame, same floor, same roof — just a thicker, longer-warrantied board wrapped around it.
Benefits
- A thicker board than standard shiplap, for extra strength
- Backed by the same 15-year anti-rot warranty as standard shiplap
- A rounded loglap profile for a solid, chunky look
Worth knowing
- Adds roughly 20% to the building price (the Heavy Duty upgrade)
- Still needs the same 2–3 year colour treatment as standard timber
Used in
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