The benefits of dry fix

The question of whether to use mortar or dry fix really comes down to the issue of future maintenance and cost. Dry fix is typically quicker to install and can be done so in any weather. In the long run, when maintenance is factored in, is always more cost-effective when compared with mortar.

There has long been an increasing move to adopt dry fix across Europe, as building codes are standardised, and dry fix is already the most popular method in the UK and is well on course to become the more popular method in the future. In many cases, dry fix also provides benefits in terms of the ventilation performance

The pros and cons of mortar

Although the cost of having ridge and hip tiles secured by mortar may be cheaper in the short term, there are undoubtedly long term maintenance costs. Mortar only has a limited lifespan and is greatly affected by the quality of the mix, building movement and environmental conditions.

Whilst dry fix should always be preferred, there are some instances where it may still be necessary to use mortar – perhaps on properties with a heritage aesthetic. For these circumstances, they must comply with BS 5534. You’ll need to ensure that a suitable mortar mix is used. The NHBC has guidelines which state that an acceptable ratio for roofing mortar is 3:1 sharp sand/cement.

Pre-mixed roof mortars are also available that are accepted by the NHBC.

Don’t get caught out

Most Roofs now can be converted into dry fix application. The UK roofing market has BBA approved dry ridge / dry hip / dry verge systems that will save you money in the long haul? In most cases re-using existing Ridge and hip tiles saving you money and keeping the aesthetics of your roof intact.

Get your free roof survey booked with one of our professional surveyors and get ahead of the prevailing winds whilst the summer is here.