De-lamination.
Frightening? Not if you set
out your stall and take your time.
This is
not a two hour job as stated. When you have finished, you will know why they
charge so much at the caravan repair shop.
I have just
done my caravan a few months ago. The floor had gone in two places, next to the
door entrance and next to the sink four feet away.
You will
find that de-lamination is where the floor is used most .i.e. next to the sink
and the door entrance.
First decide
how much de-lamination you have, ie.2 feet (old school) or 6 feet, and
check underside for gas pipes before
starting..
This size of
the de-lamination is required when you order your epoxy resin mix.
One mix will
cover about 3 feet by 3 feet. I bought
mine from Barrons - £25 for both tins.
You will
also need a large syringe to inject the mixed epoxy resin. Barrons sell this
also.
The glues
are called Apollo 1 and Apollo 2 I think
the code is A8136.
The small
tin is the hardener and must be used in the time stated on the tin.
I will go
through the steps best I can.
You will
need:
A sharp 10mm
drill
Some 10 mm round wood to cut and plug the holes, (sold in 6 foot
lengths). This needs cutting into plugs,
half inch long and sanded down at one end to make insertion
easier
You need
to:
Remove all
carpets or lino.
Tape up all
joints and the cowls under the caravan.
Use a good tapeline brown 3” wide packing tape.
If you don’t the glue will run through
the seams. (You will not know until you see a pool of glue on the path. So this
is a must),
Support the
floor under the van in some way so it cannot bend when pressure is placed on
top.
Do not push
up the floor. You can
damage the fittings inside.
Use wood
blocks stacked up just touching the floor on the underside in the same place as
the
de-lamination.
.
Drill a test
hole. Find a place that has no gas pipes
on the underside.
Slowly drill one
hole until it only just touches the plywood at the bottom. DO NOT DRILL THROUGH.
Tape up the
drill at this depth, use plenty of tape to stop the drill going deeper than it
should.
Mark out the
area of de-lamination using a black marker, in a square grid pattern of 4
inch.
Drill to the
grid pattern. When finished you will
have a large square full of holes to the size of the
de-lamination. I.e.: 3 x 3 feet.
Clean away
all and any dust or shavings.
Have a large
polythene bag ready to put over the square; the glue does not stick to
polythene.
You will
need:
A tin or
old pan large enough to hold the mix of glue.
A clean
strong stick to stir the mix.
Only mix
what you need within the time allowed.
Start at the
rear end injecting the holes one by one until the glue flows out, then plug with
the wood plug.
When
finished, place the polythene bag over all the holes.
Put a heavy
weight on top i.e. wheels and tyres or gas bottles. Leave for 24 hours to
dry.
Open all
windows to ventilate the caravan before starting the final
tasks.
Protective
clothing (masks and gloves) must be worn at this stage.
Sand down
all plugs until smooth. Replace
flooring.
Posted by Metz from UKcampsite
The delamination repair can be carried out from underneath, but you
need to buy the complete kit which works out expensive if you only use it the
once,
this is a description of the method I use for the repair of floor
delamination.
Determine the extent of the damage from inside the van, transfer the
information to the underside, drill a series of 8mm holes through the first
layer of ply ONLY these should be centred at 200mm over the whole area, now
drill 6mm pilot holes through the insulation until you just touch the upper ply
NOT through, mix the 2 part adhesive carefully and load into caulking gun
supplied with kit, the mixture will stay usable for about an hour, push the
plastic probe into the hole until it touches the upper ply then pull it back a
1/4", pump the adhesive into the floor four or five pulls should do it you will
feel the pressure build depending on the severity of the de-lam in that area,
work your way across all the holes one line at a time, when injection is
complete, place boards inside van and place weights on to apply an even pressure
across the reworked area, place plugs into holes, and leave for 24/48 hours. DO
NOT inject to close to original joins in the floor!!! Make sure you clean all
equipment with the supplied solvent within the hour. The kit is available from
www.theglue.co.uk .
You can also find delamination repair kits on ebay.
Here's how Brian Davies did the delamination repair step by
step, with pictures Click_here .
some have used the one shot and had good results.