They are used to allow rainwater to pass off the tiles and away from your roof. ... So you can understand the importance of counter battens, which create a clear path for rainwater to run and eliminate the chance of water pooling, or seeping down into your roof.

What size should counter battens be?

Counter battens installed with rigid insulation material should be a minimum of 38 by 38mm fixed through the insulation into the structure below with helical fixings.

What is a Counterbatten?

Filters. (roofing) Vertical wood strips installed on sloped roofs over which horizontal battens are secured. The primary roof covering is attached or secured to these horizontal battens. noun.

What is bs5534?

BS 5534 is the code of practice for installing slates and tiles to new-build pitched roofs and vertical cladding. It was the first guidance of its kind to provide recommendations on the design, performance and installation of new-build pitched roofs using slates, tiles, shingles and shakes.

How often should roof tiles be nailed?

Every tile of the two rows at the eaves, those up the verges, and along the two rows of the ridge should be nailed, but beyond that it is only necessary to nail every fifth tile horizontally and every third tile as you move up the roof.

Tommy's Trade Secrets - How to Batten a Wall

27 related questions found

How long do ridge tiles last?

Though tile roofs with proper maintenance can last up to 100 years, those that have had missing or broken tiles (including ridge tiles) for years will have serious rot problems and need replacing much sooner.

Do you need counter battens?

Counter battens are needed when sarking or plywood boarding is installed directly onto rafters, except in situations where slates are nailed directly into timber sarking. At the eaves, insulation can be pushed up to the underside of the Permo® underlay.

Do I need to Counterbatten?

When it comes to fitting on the roof, there are two reasons why you need either a drape or else the space created by a counter batten: firstly any water that does get through the tiles has to be able to run down to the eaves, and secondly there needs to be sufficient ventilated space under the tiles, as it's this air ...

Do you need to counter batten TLX Gold?

Because the TLX Gold at 33mm thick compresses down to only 3mm, this means that it can be used draped between the rafters with the tile battens straight over, with no need to raise the roof by requiring counter battens as do competitor products.

What is the purpose of Sarking felt?

Sarking felt is an underlay that is positioned beneath the tiles of a roof to provide a secondary defence against windblown rain. Sarking felt should be lapped into the gutter so that any rainwater that finds its way beneath the tiles can be safely drained away.

What is kingspan Nilvent?

Kingspan nilvent is a breathable membrane suitable for use in unventilated pitched roof and timber frame wall applications.

What is a warm roof construction?

A warm roof is a type of roof construction which has an insulation layer above the rafters, and immediately below its weatherproof membrane. ... A warm roof construction allows heat to be conserved within a property – without the need for a ventilation system.

Why is roof batten blue?

Red, blue, green, gold: roofing battens are a colourful lot. ... The reason our product is dyed blue is to distinguish it as meeting the necessary standard: it's a colour commonly used by Nordic and Baltic suppliers. But it's the BS5534 grading stamp, not the colour, that's important.”

How far apart should wall battens be?

The battens need to be as close to 400mm apart as possible allowing for the fact that you need the end of a plaster lath to fall on the centre of a batten so the next board can share the same batten.

Is Tyvek Supro waterproof?

Tyvek^® Supro is a durable, water resistant membrane that is reinforced with a laminated polypropylene nonwoven. This airtight, vapour-permeable membrane is extremely water-resistant, and can be used for all supported and unsupported pitched roofs.

How do you install a breathable roof membrane?

How to install a roof breather membrane

1. Lay the breather membrane. Next, lay the breather membrane parallel with the roof eaves – normally, when installing breather membrane the printed side should face outwards. ...
2. Ensure draping occurs. ...
3. Lay the rest of the breather membrane.

What's a roof purlin?

Purlins are horizontal beams that are used for structural support in buildings. Most commonly, purlins are major components of roof structures. Roof purlins are supported either by rafters or building walls and the roof deck is laid over the purlins.

What are Sarking boards?

Sarking boards are softwood boards, generally about 150 mm wide, that are attached to the rafters of a pitched roof to give extra strength to the overall structure of a building. ... Firstly, sarking boards are typically used on buildings that are exposed to extreme weather conditions, such as high wind or torrential rain.

Are Sarking boards required in Scotland?

Captain Leaky New Member. Fitting "Sarking Boards" is a peculiar Scottish practice which gives a more weatherproof roof. I have come across it in England from time to time too. It is required by Scottish building regs.

How do you gauge roof tiles?

Setting Out up the roof (Gauge)

Measure the distance (A) from the first, eaves course batten to the top course batten. Divide this distance by the maximum tile gauge. Round the answer up to the nearest whole number (B) – this gives the number of tile courses required.

Do ridge tiles need pointing?

Ridge tiles need removing completely re-beded with a three to one sand cement bed, all joints correctly pointed. ... Or why not try a dry ridge system, or a putty system, it's more expensive but will never fall out. Hope this helps.

Should ridge tiles be cemented on?

Mortar Bonded Ridge Tiles

The ridge tiles should seal the top of the roof and overlap onto the slates/tiles on each side by at least 75mm. for slate and flat faced tiles this is achieved by using a fairly stiff 1:3 (cement: sharp sand) mortar bed along the tops of the tiles/slates.

Can rain get under roof tiles?

Whilst roof tiles and slates are designed to keep out any rain, there is always the chance that strong winds can lead to rain forcing its way through any gaps or underneath the tiles.