Toyota Coaster Motorhome Conversion – Installing Wall Insulation

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With only a few hours today, we wanted to finish  our bus insulation. We still needed to remove the remaining roof insulation and then it was time to start on the wall insulation.

Roof Insulation Removal –

Finally, time to finish the roof insulation removal. This was a huge step for us and both Shane and I were so excited to finish it; it meant it would be time to start putting new things in the bus instead of removing the old.

After our last trip to the bus when we started the roof insulation removal, we received a tip from one of our subscribers suggesting we use Goo Off – Goo and Stain Remover to help with removing the old glue. It was a great idea. Previously we had tried to use this on the floor but, because of the public holidays over Easter, we didn’t get a chance to purchase any. We still wanted to mention this just for anyone else struggling with removing the glue.

There have been so many frustrating jobs on the bus so far but the original bus insulation is one that sticks with me – using a paint scraper we pulled it off, piece by piece.

Finally, it was done. No more original fire attracting bus insulation!

Installing Wall Insulation –

Finally something going in the bus rather than coming out! This is what we were looking forward to.

Our Toyota Coaster bus originally didn’t have wall insulation so we are hoping it will make a big difference.

Shane and I decided on a wool insulation from our local hardware store Bunnings. We chose this one for a couple of reasons – price, thickness, and insulation rating.

After researching what others were using, we decided whilst the more expensive options seemed good, they had the same ‘R’ value as the cheaper options. ‘R’ value is basically a measuring system where the higher the ‘R’ value, the better the insulating and thermal properties it has.

Of course we wanted the highest ‘R’ value as possible – 5.0. We quickly learnt that this was not an option. With wool, the higher ‘R’ value, the thicker the insulation. We didn’t have room for this and didn’t want to protrude into the bus too much.

We opted for an Earthwool with an ‘R’ value of 2.0. Even this had a thickness of 90mm, so we concerned this would be too thick, however it was cheap enough that we were willing to try.

It was extremely easy to tear apart and fit into the walls in the bus. We did decide to use a little bit of adhesive to keep it in place, but learnt quickly this is not necessary. I strongly recommend using masks, gloves and long sleeves. The earthwool is made from recycled glass and little particles get in everywhere. We had masks but didn’t prepare with long sleeves and when we do the roof, we have learnt our lesson and will make sure we are better prepared.

After it started to come together, we both agreed we could have gone with something thicker; the wool condenses so much that a thicker insulation would have been fine.

Undecided, we may cover this in foam board for an additional layer. Our plan at this stage for our roof insulation is again wool, and then foam board so we can get better insulation.

The whole process only took around an hour and it was done. We were surprised how quick we managed to finish it and we excited we were finally moving forward.

Our plan for next time – window tinting, new door installation and roof insulation. Keen!