Accessories

Tell us the wall.
We will tell you the screws.

Length, grade, count and boxes, worked from the same standards a specifier checks against — and every figure shows where it comes from. Change any number; nothing here is hidden.

The cladding

The wall
m²
mm

600mm is our standard fixing centre. Whether that is also your counter-batten spacing is a question we do not publish an answer to — if your drawings say otherwise, change it here.

Your schedule

—

boxes

Screw—
Why that length—
Grade—
Fixings per crossing—
Board to buy—
Fixings needed—
Price—

Pre-drilling, for this timber

—

Keep fixings at least 20mm from the end of the length — board ends are the highest split risk. TDCA — keep fixing points at least 20mm from the end of the length

Send this schedule to the mill

The arithmetic, in full

    Sources: TDUK — screw length = board thickness + 29mm, with at least 19mm penetration into the batten. TDUK/TDCA — two fixings per board/batten crossing at quarter points for boards 100mm and wider, one central fixing under 100mm. Tiny Temple — standard fixing centres 600mm (data/faq.md). TDUK gives 600mm as the maximum support centre..