James Hardie Lina Board, fill some holes

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Mavarick

213 posts

Master Geek
+1 received by user: 10

#229152 9-Feb-2018 14:45

I want to remove the exterior bulkhead light and replace with LED downlights in the sofits.

I need something to fill the existing holes, 25-30mm round and about 5mm deep ( not counting the hole for the wire) looks like drilled from inside out not clean as from the outside,

I rung James Hardie and they had nothing for a hole that size they said, but for the screw holes a 2 pot builder putty would be fine, so need something that wont shrink or expand and still look not to bad when painted, I have just repainted the Lina and that when decided on this course of action.

Any helpful hints for products that would do the job and still be watertight

t0ny

414 posts

Ultimate Geek
+1 received by user: 84

Lifetime subscriber

#1954432 9-Feb-2018 16:05

Cut some round pieces of the board and stick it in the hole. Then fill the smaller gaps, sand, paint, done

mattwnz

20515 posts

Uber Geek
+1 received by user: 4795

#1954437 9-Feb-2018 16:13

Possibily dowel and epoxy in, fill and sand, and then paint over. You could also ask the companies that do the retrofit insulation , who drill holes in the cladding to fill the cavity with foam, as you can see the filled holes under the paint on houses that have had this done.

wellygary

8810 posts

Uber Geek
+1 received by user: 5287

#1954438 9-Feb-2018 16:13

Don't try to bridge a hole that big with a flexible filler, it will sag, and likely work its way loose,

If you have a hole saw cut a nice clean hole or just tidy it up and then cut an insert out of some spare material, then glue/epoxy/seal it into place , then paint...

Mavarick

213 posts

Master Geek
+1 received by user: 10

#1954488 9-Feb-2018 18:30

This sounds a good idea, and funny enough when at my plumber mates place for beers tonite and guy turned up who used to do the poly panel and plastering and there is something they used from Repco/supercheap thats a filler with aluminum inbeded in it

thanks for the imputs

mattwnz:

Possibily dowel and epoxy in, fill and sand, and then paint over. You could also ask the companies that do the retrofit insulation , who drill holes in the cladding to fill the cavity with foam, as you can see the filled holes under the paint on houses that have had this done.