Concrete Home Maintenance and Repairs

Termites And Cracked Slabs

Can termites enter your house through cracks in your concrete slab?

According to research by the Cement and Concrete Association of Australia, a concrete slab designed and built in accordance with our current footing and slab standard AS2870 should keep termites out.

According to the CCAA data sheet, termites can’t get through cracks less than 1.4mm wide. Even though termites are smaller than that, they don’t like the rough concrete edges and have to mud line the crack to make it through.

So if your house slab is designed by a structural engineer to comply with AS2870, the Australian code for residential footings and slabs, then termites should not be able to enter your house through cracks in the slab.

I know you want to read more for yourself, so here’s the link:

Concrete Slabs as Barriers to Subterranean Termites

Home Maintenance and Repairs

Can a Violent Impact from a Car cause Cracks to form in a House Years Later

Cornell Engineers was asked to quote a job recently where a car collided with a house. The damage had already been repaired but the owner started noticing:

  • cracking in walls, cornices and door trims;
  • popping of nails in walls;
  • jamming and misaligned doors;
  • cracking and crumbling of mortar in brick work.

These issues sound a lot like slab heave to me.

Footings and Slabs Home Maintenance and Repairs

Slab Heave Explainer Video

What is slab heave and how does it affect houses?

Hi. I’m structural engineer Matt Cornell and this is my explainer video on slab heave.

Home Maintenance and Repairs Waffle Pod Slabs

Slab Heave Hits Melbourne – and now Sydney

Slab Heave in Melbourne

A recent article by Simon Yohanson in The Age, Melbourne has highlighted the ongoing problem faced by homeowners as slab heave hits Melbourne.

“Thousands of suburban homeowners facing financial ruin.

Home Maintenance and Repairs Home Renovation

5 Home Renovation Products from Sika

Renovating or building? These are my favourite five Sika construction chemicals that you’ll need for your next home renovation.

Contact Details for Sika

Fresh update! This page features our favourite Sika products; but the best way to get hold of a Sika product is to contact Sika directly. Check out this link:

Sika MonoTop-Primer

If you’re patching cracked or broken concrete, Sika MonoTop Primer is what you apply to the old concrete first to make sure the new concrete sticks. Brush, roller or spray on – it’s easy to apply and will improve the bond between old and new concrete.

Get Sika MonoTop Primer from Bunnings


Multi-purpose flexible joint sealant for use inside and out. Seal the gap in brick control joints, around windows and doors and wall and floor penetrations.

This stuff sticks to concrete, brick, tiles, moist metal and most timber.

My favourite use for Sikaflex-Pro is to seal the  gap between concrete paths and brickwork walls to prevent water running into the ground adjacent to house footings. It’s great because, when installed correctly, the sealant flexes open and closed without tearing.

Get Sikaflex-Pro from Bunnings


If you’re building a retaining wall or a basement then you need to make sure water won’t come through your wall. SikaTite-BE is a water based bitumen  emulsion that can be applied on the soil side of the wall. Spray, roller or brush on.

When I specify a bitumen based waterproofing membrane – this is the black stuff I’m thinking of. I also like to specify it as a treatment for DuraGal galvanised steel to stop it rusting where it is in contact with concrete.

Contact Sika directly.

Sikasil C AP

A range of coloured silicone sealants to match the colours of your kitchens and bathrooms. These arty-farty colours will blend in nicely with the look you’ve got going.

Seal the gap behind the new kitchen bench and along the side of your new bathroom vanity. So much more in sync with the vibe than sticking to white, colours like Taupe, Ivory, Pewter and Stone! Pretty fancy and jut perfect for your renovation.

Grab it at Bunnings


Wanna get stuck? DIY renovators that want to stick something to something else – or itself – will love this stuff. Handy aerosol adhesive for multipurpose sticking.

Please don’t use it to fix plasterboard to a wall or to glue coins to the footpath – it’s more suitable for art and craft, repairs, and making stuff. Those TV renovators probably use tonnes of this stuff.

Get Stuck at Bunnings


Cornell Engineers are structural engineers in Brisbane and Mackay.  We work with and specify construction chemicals regularly and these were our favourite 5 products form Sika.

When working with construction chemicals, please read and follow the instructions. That’s why we provide links to the Product Data Sheets – please use them.

Thanks for checking out our page on Sika Construction Products. Let us know your favourite products if you get a chance!!

PS. and thank you Sika Australia!