Timber – The type of timber used for a roofing batten is significant. The species of tree from which the wood has come from should be stamped on the batten. Here at Marley, we only use slow-grown imported redwood or whitewood for our JB Red Battens.
What size timber is used for roof battens?
Timber battens for metal roofs come in a range of sizes: 75 x 45. 90 x 35. 90 x 45.
What are roofing battens made of?
While roof battens are most commonly made of metal or wood, they can be made of other materials like plastic or composite. There are several different types of batten, some combine two materials to get the needed affect.
How thick should roof battens be?
Regardless of application, all roofing battens should be no less than 25mm thick, with a maximum tolerance of +/- 3mm.
Why are wood battens blue?
For fixing Roof Tiles, Slates, and sheets, Batten colour may vary. The battens are blue in colour indicating that each individual batten has been assessed, graded and complies with the strength requirements of BS 5534 : 2003 + A1 : 2010.
Should roof battens be nailed or screwed?
The nails should provide a minimum of 40mm penetration into the rafter, so a nail length of 65mm is generally recommended. Start at the lower edge of the roof, nailing the batten into place at the centre of the rafter. Joints should be directly over rafters, with the batten square cut, tightly butted and skewed nailed.
Why is roof batten blue?
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.”
What is batten wood?
The battens are strips of lumber, typically 1 to 3 inches wide, which are then nailed down to cover the joins where the vertical planks meet. Battens should be wide enough to extend at least ½ inch on either side of the join. The vertical planks can range from 6 to 12 inches wide, depending on preference.
Which is the best timber for roofing?
Different layers of thickness are available for plywood and it is made in sheets. The sheets are practical solutions to cover roofs as they are flexible and can withstand pressure and are puncture proof compared with OSB. The plywood is the more popular choice because of its price and flexibility in installation.
Why are roof battens blue or red?
The original idea behind putting a dye into the battens’ preservative treatment was to make “graded” battens stand out from the usual, “ungraded” ones (which usually look a bit green in colour, on account of the type of preservative used) and for that reason, the colouring process was originally very successful – with …
Why are roofing battens red?
JB Red is the branding given to our BS 5534 graded roofing battens, which are coloured red to help identify the batten as graded on site. It is part of the trademark that sets the JB battens apart. … This gives a straight distortion free batten that is light to handle and meets the required moisture content in BS 5534.
Do roof battens need to be treated?
Treatment – Roofing battens should be preservative treated to Use Class 2 in accordance with BS 8417. Different manufacturers use their own types of preservative treatment and may offer different guarantees as a result.
Can you walk on roof battens?
The safe system of work dictates that the roofers never deliberately walk on the battens, mid span, between the trusses. The safe system of work dictates that the roofers always walk on the rafter line when installing the tiles and slates.
How long do roofing battens last?
Most battens are supplied with an industrially applied treatment process designed to provide a 60-year design life under Use Class 2. The relevant Standard is BS 8417:2011 Preservation of Wood.
Do roof battens rot?
You can get some rot in roof battens, but, generally, it’s at the roof’s edges, such as at chimneys or in verges – the edge of a roof that has a gable. Battens in the main body of the roof do not rot, unless there are some major long-term defects, or the tiles have become porous.
Are blue roof battens treated?
Our timber batten is pressure treated to resist rot and insect attack, and machine graded to meet BS5534.