This update provides guidance on the requirements associated with the design and construction of basements and other below ground structures. Technical guidance for adding ceramic tiling on timber floors. Note, ceramic floor tiling is not included under the warranty policy cover. Get a quote. Home Blog How to use cavity wall ties to meet building regulations. Join them and receive useful tips, practical technical information and industry news by email once every 6 weeks.
Subscribe to the Building Bulletin. Select your language English Welsh. How to use cavity wall ties correctly Here are some easy steps to get your wall ties right: The length of wall tie needed is specified in table 5 of Approved Document A of the Building Regulations , reproduced below.
You need two and a half wall ties per square metre of masonry. The maximum horizontal spacing is mm and the maximum vertical spacing is mm. Set each wall tie a minimum of 50mm into both masonry leaves.
Only use insulation retaining clips that are compatible with your tie. Change the wall tie pattern around openings such as windows, doors, roof verges and movement joints. Here the vertical spacing is reduced to a maximum mm and should be within mm of the opening.
Cavity wall ties should be stainless steel. Further reading Also read Avoid backfalling wall ties Please Note: Every care was taken to ensure the information was correct at the time of publication. No subject Submitted 3 years 1 month ago What is the regulations on wall ties for dividing cavity walls between two properties,i. Reply Submitted 3 years 1 month ago Wall ties for separating walls between dwellings need to satisfy structural requirements as well as resistance to passage of sound.
Width of the cavity will have a significant effect on both requirements. A wider cavity should benefit sound insulation performance but may affect the choice of wall ties.
This relates to transmission of vibration. There is a need to ensure the choice of wall ties satisfies structural requirements suitable for the cavity width while being aware of the sound transmission properties. See AD E for description of type A wall ties. Ultimately the wall must satisfy either the construction described for a licenced Robust Detail or be subject to a pre-completion test to demonstrate compliance.
Wall Ties Submitted 2 years 6 months ago hi, I know you shouldn't start wall ties in at DPC level but what is the reason for this? The reason is to ensure adequate bonding between mortar and the course of brick above and below.
Reply to: 76mm Cavity spacing Submitted 2 years 3 months ago Hi, thanks for your question. Having checked earlier versions of this article I'm afraid that we cannot find the table you're referring to. Regards, LABC. Wall ties on corners Submitted 1 year 5 months ago Hi there I have been pulled up on site for not putting enough wall ties at internal and external corners.
I am being told to put a tie every course either side of the corner. Is this correct? Many thanks. Box of Flexible 5mm diameter stainless steel remedial cavity brick ties. Helical flutes offer superior keying when resin grouted in masonry wall tie replacement schemes.
Helical tie bars for connecting multiple layers of brick or stone when reinforcing the separating leaves of a solid wall without the need for special grouts or mortars. Packed in lots of Price incl. For mm cavities, a density of 2. Ties should be evenly spaced except around openings where they should be staggered accordingly. ACS recommends wall ties achieve a minimum embedment of
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