Have you checked the main website?
The answers to many questions are there!


Pavingexpert
The Brew Cabin
Paving, Drainage and
Hard-landscaping in
Britain and Ireland

Search Members Help

» Welcome Guest           [ Log In :: Register ]

ruler

 

[ Track this topic :: Email this topic :: Print this topic ]

reply to topic start new topic
Topic: Slabs on beam and block - advice needed, Slabs on beam and block< Next Oldest | Next Newest >
HelpMonkey
Offline

Apprentice




Group: Members
Posts: 2
Joined: July 2019
Posted: 11 July 2019,14:53 QUOTE

Hello guys
Please can you advise.
House built on a slope.  So we have a rear patio area made from beam and block - about 40m2.

Have bought sandstone slabs of mixed sizes.  Biggest 90@x600.  Wondering whether you could guide me on best way to bed sandstone onto beam and block?  The beam and block bounces and moves in small amounts, as do most, and thinking of damage to adhesion and joints.

- will a mortar bed be sufficient?
- should it be screeded first?
- should I go with a BAL type flexible product straight onto beam and block?

Any advice very welcome on how you would do it
Cheers
Matt


--------------
Help Monkey
Back to top
Profile Personal Message 
Tony McC
Offline

Site Agent




Group: Moderator
Posts: 11039
Joined: July 2004
Posted: 16 July 2019,09:33 QUOTE

I'd be more concerned with ascertaining why the B&B floor is moving, It should be more-or-less completely stable. You can sometimes get minor wobbles when a bit of grit or similar has lodged benath one of the blocks, but other than that, there should be no movement. Sort that first!

The usual process then would be to lay a DPM, insulation (if necessary) then a screed of sand/cement, and finally the paving itself.

But all this depends on the B&B being stable. Any movement therein will only be transferred through to the eventual paving layer.


--------------
Site Agent - Pavingexpert
Back to top
Profile Personal Message WEB 
HelpMonkey
Offline

Apprentice




Group: Members
Posts: 2
Joined: July 2019
Posted: 18 July 2019,22:45 QUOTE

Thanks for your guidance, much appreciated.
The B&B has some flexibility as it’s 4750mm long, the max span without support.You can feel small movement if you jump in the centre.  I have now screeded the surface.

Would you use a flexible adhesive or a mortar bed for the sandstone slabs?


--------------
Help Monkey
Back to top
Profile Personal Message 
Tony McC
Offline

Site Agent




Group: Moderator
Posts: 11039
Joined: July 2004
Posted: 19 July 2019,10:16 QUOTE

Mortar bed - there's nothing to be gained by using a flexible adhesive

--------------
Site Agent - Pavingexpert
Back to top
Profile Personal Message WEB 
3 replies since 11 July 2019,14:53 < Next Oldest | Next Newest >

[ Track this topic :: Email this topic :: Print this topic ]

 
reply to topic start new topic
Quick Reply: Slabs on beam and block - advice needed

Do you wish to enable your signature for this post?
Do you wish to enable emoticons for this post?
Track this topic
View All Emoticons
View iB Code


ruler

ruler