raising deck level around IG pool - building up bond beam?

Mobius5

Member
Jul 6, 2017
13
Buckinghamshire, UK
Hello,

I'm currently looking at a complete pool renovation project and the landscape designer would like to raise the existing deck level around the pool to the house finished floor level. Obviously there's things to take care of like damp proof where it meets the house, but with respect to the pool, could the existing bond beam be built up to the new level and how would this be achieved?

All the old coping is going anyway, as are all the skimmers/returns, so presumably we'd need to strip back to the existing bond beam then use blockwork to increase the height and then backfill? Would we need to mechanically fasten the new blockwork to the bond beam (e.g. epoxy & rebar) or would a bonding agent on the blockwork be good enough?

Thanks
 

Neto

Well-known member
Jun 10, 2019
182
Urbana, MD
my pool is currently being built and the coping crew elevated the coping with 3/4" to 1" mortar. I am not sure how high do you want to go but i would definitely talk to a professional about this.
 

Mobius5

Member
Jul 6, 2017
13
Buckinghamshire, UK
BUMP - Any ideas on this..? Specifically would we need to mechanically fasten the new blockwork to the bond beam (e.g. epoxy & rebar) or would a bonding agent on the blockwork/cement be good enough to secure the new course of blocks, given the area will be backfilled with crushed limestone and compressed with a whacker plate?
 

Pv2

LifeTime Supporter
Aug 14, 2013
458
south east Arizona
do you have some photos or drawings to help illustrate what you are wanting to do? I am not even qualified to ask, give advice, or anything, but I am curious. someone might be along to advise soon.
 

ajw22

Gold Supporter
TFP Guide
Jul 21, 2013
9,876
Northern NJ
So you want to raise the water level of the pool using blocks on the bond beam?

We have heard of pools being built with a block shell and then plastered or vinyl liner installed. I think the devil is in the details of type of blocks and how it is all structurally tied together.

@bdavis466 @MinerJason thoughts?
 

bdavis466

TFP Expert
Platinum Supporter
Aug 4, 2014
4,963
San Clemente, CA
Block would be a poor choice in that application. Since this is a structural change to the pool an engineer should be consulted to advise on concrete mix and rebar size/placement.

Plan on installing several rebar dowels epoxied in place and reconstructing the bond beam. You'll also want to be sure the new rebar is connected to the existing rebar somehow to maintain proper electrical bonding.
 

jimmythegreek

Bronze Supporter
TFP Guide
Aug 10, 2017
1,278
Morris Cnty NJ
You would have to chip back the shell somewhere to join the bonding grid then epoxy rebar dowels and form a new bond beam with a continuous pour of high psi concrete. 12" on center is the usual with some horizontal bar wired up. You have to plan to prep for skimmer and plumb that and any fittings to be raised that need to be up high

My advice would be to not raise the pool deck up that high. I dont get along well with designers only because I have countless architects and designers draw and vision things that are either too expensive to build, make no sense, or can't be built. You should always have at least a 4" drop in front of any exterior door for water and snow etc
 

MinerJason

Bronze Supporter
Jan 29, 2018
269
Tucson, AZ
I'm going to echo what Brian and Jimmy have already said. You'd want to chip out existing bond beam to expose rebar to tie into the bonding grid (preferably in a few places), lots of rebar dowels epoxied into the existing bond beam, and a high strength concrete pour to raise it. And as Jimmy mentioned, having the pool deck at the same height as your finished house floor level is generally a bad idea for drainage reasons. Pretty sure that's not even something that's allowed by code in most places here in the US. Not sure about the UK though.