Bushtracker - Wall frames

Wall frames

We would suggest to you that there is a real advantage to coming up to the factory for a visit. We
guarantee you will be impressed. No one builds frames like we do. Most are still building glued and
stapled timber frames on the exterior walls.

Of the very few who build in aluminium, most are building in 1mm "C" channel with single pop rivets. We
are building in 2mm and 3mm square box section 25mm x 25mm and 50mm x 25mm with full laps on
3mm angle, double rivets diagonal in aircraft style and welded as well. Then all the corners are welded
and through bolted. Nothing compares with that in strength and longevity, and it is immune to the normal
caravan destroyers, like dry rot, borers, wood swelling, fungus, water damage, etc. Boeing does not
build their exterior walls of aircraft in glued and stapled timber, and neither does Bushtracker.

In the tropics wire staples only last a few years. All cladding is in 250mm strips and they even staple
on the cladding in the overlaps where wind at 100km per hour can blow moisture up to attack both the wood frames and also the staples.

They also have to continually battle dry rot and fungus in wooden exterior walls, and some have even resorted to using treated wood to try and slow down the dry rot effect. This has only made more problems in wood framed caravans because the material used to treat the wood is copper based and the copper could chemically react with the aluminium exterior cladding eating it away in time. Even normal condensation and humidity in the tropics will attack the thin staples in the exterior walls and start these problems. On our cladding, we use hidden structural rivets every 250mm on each wall stud. It is many times stronger and more durable. There is just no comparison.

We also use three inches of cooler board insulation in the roofs and one inch in the walls not batts or fibreglass to settle out on the corrugation. Why? Because it's the best.

Because of the nature of the construction of our caravans, our vans are lighter and stronger than a wooden exterior frame van from the trailer up. A wood exterior frame means some fairly substantial timbers to span the roof. Ours are not only more durable, but also lighter and stronger from the body armour up, while heavier from the armour down in chassis and suspension, where it really counts - which means we have a lower centre of gravity than other caravans.