This kind of roof replacement is a little more challenging than a free standing home. The best way to do it is to talk your neighbour into doing their side too so the entire roof is done all at once! This is definitely more efficient and that adds up to cost saving for both home owners.

But in my experience, it’s actually rare that both owners are ready and willing to do the roof replacement at the same time. So how do you do it?

Well, it’s much the same as a usual tile or slate to Colorbond roof replacement, but with a lot more care and attention to detail needed along the boundary. Usually the slate or tile will need to be cut right on the boundary line so there is a nice straight line for the new Colorbond sheet to run parallel with. We then use a soft flashing such as Wakaflex or equivalent over the boundary. This is quick to install and keeps this junction watertight, but by itself it’s not very durable. We have found the best method is to re-install the tile ridge capping (which can be salvaged at the start of the works) over the top of this soft flashing. The ridge capping is bedded with sand and cement and finished with pre-mixed coloured pointing. It looks good and is very durable.

Below are photos of a slate roof we recently replaced in Earlwood. The new Colorbond is Woodland Grey colour. The other roof is one we did in Marrickville earlier this year which now has a Surfmist Colorbond roof. Which one do you prefer?