Darlaston Builders Merchants

Decking Material Calculator

Enter your deck size and we'll work out the boards, framing timber, screws and treatment you need, ready to order from DBM.

Your deck

Boards run along this direction.
400mm is standard; 300mm for a firmer feel.
Covers cuts and staggered joints.

Your shopping list

You'll needOrder from DBM
How the deck goes together

1. Prepare the ground

Clear and level the ground, then lay a weed membrane with some gravel.

2. Build the frame

Build a level frame of joists on a firm base or paving, spacing the joists at your chosen centres with a gap underneath for air, and check it's level and square.

3. Fix the boards

Screw the deck boards down across the joists with about a 5mm gap between each one, two screws into every joist, and stagger the board ends.

4. Treat it

Give the deck a coat of decking oil or treatment once it's down, and do the cut ends as you go.

Quantities are a guide based on your deck size and include your chosen wastage. Framing timber assumes a simple rectangular frame; a raised or complex deck may need extra bearers and posts. Pop into any DBM branch and we'll help you finalise the order.

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