Quantity of firrings
When we cut firrings from our stock timbers we get 2 firrings per piece. If you order an odd number we will charge you for the next even number up. If delivery is needed then it would be cheaper to order exactly what you need as delivery cost is based on weight. The spare firring would be discarded in this case.
Length of firring
We will cut to length but we will charge for the nearest stock length. Our stock lengths are 2.4m, 3.0m, 3.6m, 4.8m and 6.0m which may vary depending on what section you require. Firrings less than 4.8m they will be supplied one piece. Firrings greater than 4.8m will be supplied in two halves.
There is no structural reason why 69mm should ever be used for a flat roof but we have included it anyway in case matching up to 69mm joists is desired. Delivery will cost more for the 69mm due to increased weight.
Treatment of firrings is not needed for flat roofs but we have included it just in case it has been insisted upon. Treatment is only available in the 44mm thickness. WARNING: treatment will be cut away from the tapered edge and maybe from the bottom edge as well.
When choosing your "Fall option" below please note we have a far greater range of timber sizes to use in the 44mm thick firring option which could result in less waste and cost.