The roofing, timber & facades blog by Marley Eternit is a valuable resource to provide you with expert advice and helpful tips on your projects.
09 February 2017
There is a vast choice of roof underlays available on the market today, ranging from traditional bituminous (Type 1F) products, through to more modern lightweight alternatives that are classified as either breathable (low resistance) or non breathable (high resistance). It’s important to understand the differences between these underlay types and how they will integrate within the whole roof system, and also potentially impact on ventilation requirements.
Non-breathable roof underlay
08 February 2017
What British standards impact tiled roof specification?
The most important British Standards for tile roofs are BS 5534, BS 8000-6 and BS 5250. BS 5534 and 8000-6 relate to design, specification and installation; while 5250 focuses on condensation control.
BS 5534 - design and installation of slated and tiled roofs
BS 5534:2014 is the code of practice for slating and tiling, including shingles, for pitched roofs and vertical tiling.
BS 5534:2014 has recently been significantly updated. An import...
27 January 2017
For roof refurbishments, UK planning guidance has recently moved towards more authentic renovations, which favours the replacement of building products with materials that are similar to what was originally used. For new buildings in areas where clay tiles are prevalent, it has also become more important for roof tiles to blend well with the surrounding buildings.
Clay tiles are widespread as a roofing material on the east coast of the UK, due to historical trade with Holland. In the 17th centur...
15 December 2016
When correctly installed in accordance with the manufacturer’s recommendations, roof tiles and slates should give trouble-free performance throughout their service life.
However, there are several standard procedures which should be drawn to the attention of the building owner, when accepting stewardship of the completed roof.
Roof maintenance inspection checklist
Carry out regular visual inspections of the roof, usually twice a year in the spring and autumn:
Look for signs of any cr...
14 December 2016
BS 5534 is the code of practice for slating and tiling, including shingles, for pitched roofs and vertical tiling.
The standard was updated in 2014 to reflect improvements to working practices and introduce some fundamental changes to product selection.
The new BS 5534 is intended to be read and used in conjunction with:
BS 8000-6:2013 Workmanship on Building Sites – Part 6: Code of practice for slating and tiling of roofs and walls.
BS 5250 Code of practice for Control of conden...
09 November 2016
Here we look in depth at practical steps to consider with the actual repair and replacement of individual roof tiles.
Individual tiles or slates that are damaged during or after installation should be replaced as soon as possible using a sound, matching unit fixed in accordance with the nailing and / or clipping specification. Avoid repairing damaged slates or tiles using superficial coatings, adhesives or other mechanical devices, as their performance may be limited.
In some cases, repair may n...
The updated BS 5334:2014 Code of practice for slating and tiling specifies a number of batten sizes based upon the span of the rafters and the product being used
04 November 2016
A roof is made up of a system of products working together and it’s important to be clear on the terminology, especially since the parts of a roof can be referred to in different ways.
It is not normally necessary to apply for planning permission to re-roof a house, or to retrofit rooflights or skylights. The development rules allow for roof alterations subject to the limits and conditions
01 November 2016
Here we explain in detail how to fit roof slates using the nail and rivet fixing method. If you are fitting a roof at a pitch lower than 15 degrees, use the hook fixing method, which is recommended for our Birkdale low pitch slates.
Before fitting roof slates, consideration should of course be given to the dimensions and headlap, as well as the specification of underlay and battens.
Nail and rivet fixing method for fibre cement roof slates
All slates should be fixed in accordance wi...
31 October 2016
If you are specifying timber decking there are a number of things that should be considered including legislation.
30 September 2016
Regular maintenance is crucial to prolong the lifespan of a roof and preserve its integrity. This should include inspection for broken and loose tiles, checking gutters and downpipes, and the removal of any organic material that may have built up, such as leaves, moss and lichen.
Moss and lichen tends to flourish on roofs in rural areas, where trees are nearby and where there are shady, damp conditions. Steeper pitched roofs are less likely to support moss and lichen growth as they shed water mo...