installing wall ties to new cavity wall. What height

4 Jan 2006
Reaction score
United Kingdom
I plan on building my walls above DPC from tomorrow which consist of 2 skins of blockwork with 90mm cavity (40mm celotex).

Below DPC is 2.5 blocks high which is filled with concrete to 1 block below DPC (ground level).

Question is at what height should i install the first wall ties. Should this be the first course (on the DPC) or second course etc? How far apart should they then be spaced horizontally and vertically.

Also, one quick last question, should the insulation start from above the DPC, or should it extend down to the concrete?
Sponsored Links

DIYnot Local

Staff member

If you need to find a tradesperson to get your job done, please try our local search below, or if you are doing it yourself you can find suppliers local to you.

Select the supplier or trade you require, enter your location to begin your search.

Are you a trade or supplier? You can create your listing free at DIYnot Local

Sponsored Links