https://www.mobilehomerepair.com/phpbb/v ... f=6&t=8514
well i have finally started work on my mobile home in the uk.
stage 1 was to paint the chassis with hammerite, stage 2 coat the floor joists with good quality wood preserver and dryrot protection, and finally i chose Celotex 50mm or 2" and used a high modular silicon mastic to seal the insulation in and fill the gaps with expanding foam.
When i first started i noticed one end had no jacks under the chassis so i purchased 24 and fitted them under the chassis then had to start leveling,
i hope i have done this correct, firstly i bought a water level consisting of 2 tubes with gradients in mm on and 30 ft of clear 3/8 pipe. I then converted a 2ft by 1ft plastic container fitting the pipe to one end and a water level to the other end of the pipe.
i then went underneath and sprayed a 3" square on the cross members by every jack point, when i say cross members i mean the steel U section running across the narrow profile of the home these are what the wooden floor joists are fixed to. I then marked a Datum line on all of the squares i had painted.
this is a picture of the area.
next i put the container at the same height as these steel u section but outside on some bricks,
i filled the container with water and also added some red food colorant to tint the water making reading easier.
the scale end had a stop on it that turned out to be really useful when crawling about not wanting to spill any water.
i let the pipe and scale fill from the container then fixed it with an elastic band to the marked u section, lining up the 20mm mark with the datum mark on the u section.
removing the cap from the scale and letting the level settle, i then took out some water from the container until the water in the scale settled at 70mm "mid range of the scale".
i then moved the scale to every point i had marked on the chassis, lining the 20mm mark with the datum at every point, then taking down the reading where the water level settled.
i found the end that had no jacks was between 15 to 25mm to low.
i then went through the lot again and jacked up where it was low and let down where it was high.
i managed to get it to within 3mm 1/8" over every jack.
This is the first time i have tried this so i hope i did it correct please let me know if not
next i fitted the insulation 50mm or 2" Celotex pir foam sheets.
i cut these to size and in 4ft lengths as i found this to be easier to slide up above the u section runs" they came in 8 x 4ft sheets, these went against the floor of the home, i used some little triangle shaped wooden wedges to hold the foam in place.
once it was all cut and in place i rand down the edges with high modular silicone mastic and expanding foam for any large gaps.
below are some pictures of the insulation in place this is a fiddly job but i could feel the difference straight away when walking on the kitchen lino floor.
