What size cavity closer do I need?
It’s simple to work out what width cavity closer you need. Measure the distance between the brick and the block to get the width of the cavity. If this width is 50mm then you need a 50mm cavity closer.
What is a cavity closure?
A cavity closer fits within a cavity wall, where windows and doors are fitted. The cavity closer acts as a seal, preventing external water vapour and damp from entering the cavity wall and the building, whilst also preventing heat from being lost through the gap.
Where are cavity closers typically used?
Cavity closers are predominantly used to close openings, such as doors and windows, in external wall structures. The Timloc range offers thermal, acoustic and fire protection depending on your requirements.
Can you use expanding foam as a cavity closer?
Yes, you can use expanding foam insulation as cavity wall insulation. Expanding foam insulation can be applied to any surface to prevent draughts and enhance structural integrity, thus making it ideal for cavity walls.
Can you plaster over a cavity closer?
Yes, it will hold. Dab on the block and the closer, it’ll never go anywhere.
What way round do cavity closers go?
Which way round do you fit a cavity closer? The plastic part of the cavity closer should always be touching the outer brick wall and not the inner block wall, as the drawing shows below.
Do I need a cavity closer?
To comply with Building Regulations the use of cavity closers are required. They prevent water around a window or door to help prevent water penetration around the door or window frames. The use of Cavity Closers help prevent heat loss and are used in common areas that are cold, especially window and door frames.
Are cavity closers required with full fill insulation?
When full fill insulation is used, the cavity barrier is NOT required here to conform with Approved Document Part B. The cavity must be closed at the top of the wall for the provisions of Diagram 34 ADBV2 to apply.
How do you fill in cavity walls?
Many cavity walls can be insulated by injecting insulation material into the cavity from the outside. A specialist company will drill holes in the outside walls, inject insulation through the holes and then seal them with cement.