We startbyplacing thesub-structure,which consists ofhardwoodjoists.
Thesejoistsare placedwith a distancebetween each other of up to50cm.
If you have soilfollowstep 1,if you have aflat surfaceofstabilized sand,concrete orotherfollow step2.If you want to create a hardwood decking on a roof terrace, followstep 3.
The hardwoodjoistsmay be placeddirectlyonthehard surfaceifyou are sure thatthis surfaceis flatenough(the hardwoodjoistsshould be supportedeach100cm or less). Onthe outer edges ofyour hardwooddeckwe recommendto anchor the joists.
Ona roof terrace it is best not to put the joistsdirectlyon the roof cladding toavoid damage.You can work withadrainagecloth or-ifneed to bring your deckingat a certain height-with adjustablejoistsupports.Minimumeach 100cmyou mustprovidesupportofthe joists and this over the full length of the joists.
our experience of long standing
project, our experience
of long standing