wrote in message
oups.com...
Hi all
Im just starting construction of a small extension [15 square metres]
to my 1974 brick built bungalow.I am installing a sloped roof while Im
at it 10 metres by 7 metres.The architect has specified that the
roof--pyramid shaped--why make it easy-- is built on 4 beams which sit
on the existing dreaded flat roof he has specified failrly substantial
beams all made from 3 300X47 Kerto LVL timber spiked together.
1 What is Kerto LVL timber-does it come from outer space?
2 What is spiked construction--can I do it myself.
PS Many thanks again to all who advised me on replacing my rotten
facias and soffits in plastic--no more peeling paint--total cost £800
including Oggee gutters-my Scottish heart gets warm every time I look
at that plastic.


These are basically wooden girder structures. The 'spiked' joints are
presumably cross drilled corner reinforcement. These holes are critical and
factory drilled. Rather like rsjs, you order exact sizes and specify the
joints you need.

Sounds very over the top for a small extension roof that 99 percent of
builders would knock up in a day using 6 by 2 s. on an edge beam of (if you
are lucky) a bit of whatever wood they had lying about. (8 or 10 by 2
possibly)

mrcheerful