tile adhesive instead of mortar round lintel?

alex1574 · 19 Dec 2013

Hi,

I am about to insert a concrete lintel (65mm x 100mm x1800mm) into an external load bearing wall, and I was wondering if it would be easier to use tile adhesive instead of normal mortar to fix the lintel in place.
From what I've been able to read, tile adhesive is similar to normal mortar, except it has additives which make it stronger, especially when in thin layers?

Any advice/thoughts would be much appreciated,
thanks,

rjm2k · 19 Dec 2013

Won't tile adhesive dissolve if wet?

alex1574 · 19 Dec 2013

- I thought tile adhesive was designed to be waterproof when cured. I think the only way to remove it once it's cured is with a steamer and a chisel?

rjm2k · 19 Dec 2013

If you soak a tile with adhesive in a bucket of water overnight you will find the adhesive comes off quite easily. There may be more waterproof options but I think standard tile adhesive is water soluble.

Best use the proper materials for the job.

alex1574 · 19 Dec 2013

oh, I didn't realise that, thanks for the info. I will use normal mortar in that case.

Also, if possible, could I ask a follow up question?
I've been advised that using a 65mm high concrete lintel will be sufficient, as long as there is a 150mm overlap at each end supported by brickwork underneath.
The lintel will be installed near the ground floor ceiling, and will be supporting the 1st floor of the building and the roof.
Could you let me know if this sounds right to you, or if I should be using a thicker lintel - or a steel RSJ type of lintel?

Many thanks,

simonjay · 19 Dec 2013

alex1574 said:
- I thought tile adhesive was designed to be waterproof when cured. I think the only way to remove it once it's cured is with a steamer and a chisel?

Cement-based tile adhesive (that you mix with water) is fully waterproof when set, other types (tub mix) are not. If you use stuff that says suitable for swimming tools it must be waterproof, if you think about it.
Having said that, what's wrong with mortar ?

alex1574 · 19 Dec 2013

Hi,

I was thinking that tile adhesive would be easier to shove into the small gap round the lintel (10mm) - and it might also form a more resilient bond than a mortar mix that was just cement and building sand (1:3)

thanks,

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tile adhesive instead of mortar round lintel?

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