Pitched Roof Fixing Requirements For Different Slates & Tiles

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Pitched Roof Fixing Requirements For Different Slates and Tiles

Pitched roof fixing requirements for slates & tiles are laid out in some detail in ‘ B.S.5534 The Code Of Practice For Slating and Tiling’ which is generally the go to source document.

However, product development and innovation often moves much more quickly than the British Standards which are therefore unable to keep up. The British Standards recognise this and will often have a fall-back position saying that fixing should be in accordance with the manufacturer’s recommendations or as agreed with the manufacturer.

To this end most manufacturers will provide a fixing specification free of charge provided you supply the site and project details.

Some listed buildings ask that traditional materials are fixed using traditional methods. Technical documents for some such situations have been produced by various bodies including, for example, the ‘NFRC TB07 Recommendations For Laying & Fixing Peg Tiles’.

Be careful to ensure that the traditional fixing method meets the British Standard. If not, modifications and compromises may have to be made by the parties involved, including the client. For example, the mechanical fixing of all hip and ridge tiles is now required whereas traditionally they would have been bedded in mortar. A restoration architect is unlikely to want to see any fixings, so just be careful who is shouldering the risk.

As well as providing a fixing specification, most pitched roof manufacturers will now offer extended guarantees provided they are made the nominated manufacturer for the project, produce the whole specification and specify all their ancillary products, as well as the roof tiles/slates.

The ancillary products (e.g. roofing felt, drips, clips, nails, flashings, roof lights etc) are usually manufactured by a third party and while the guarantee is tempting, the customer will be forced to pay a premium for these products, sometimes two or three times the price they would have cost if they had been obtained direct or from a different manufacturer.

In conclusion, there is no ‘one size fits all’. Different geographical locations, distance from the sea, high ground, tall buildings and even the rafter length are just some of the factors which play a part. But reference to the various sources above should provide a comprehensive guideline.

This article, as with all other articles we produce, is for guidance purposes only. It does not constitute formal advice and should not be relied upon as such. For bespoke, unbiased advice relating to your commercial roofing project please contact us and we would be pleased to assist.

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