Vinyl Liner Pool Renovation

Renovation of existing PVC Liner Pools

What is involved Liner Pool Renovation?

Unfortunately liner pool renovation to an old pool does not just involve taking out the old liner and replacing it - if only it were!

Liner renewal to modular panel pools is a waste of money

The procedures involved on this page only apply to concrete or concrete block pools where the structure appears to be ok. The renewal of the liner to a modular panel pool wall is a waste of money because the unreliability of the structure does not warrant the cost involved in liner renewal.

The Pool through the wall Equipment

There are normally two skimmers, three inlets, one vacuum point and one or two main drains that have to be cut through the new liner and sealed with the proper gaskets, held in place by the screwed front plastic retaining pieces.

The plastic on these is invariably very tatty and the screw connections have often deteriorated following corrosion. If you are very lucky and these components have been provided by a major manufacturer - we may be able to buy new front pieces that will fit the pieces that have been cast through the wall.

However the likelihood is that the components cannot be matched and it is necessary to remove all the old through the wall equipment and replace with new parts. This involves draining down the pool, taking out the old liner and cutting out the concrete around the pool wall equipment out with a compressor and jack hammers.


Margelles and Liner Lock

To be sure that the new liner is properly fixed the pool coping stones have to be removed so that a new liner lock can be installed. They then need to be relaid and re-grouted. This process takes two or three days on its own.

Pool floor and walls

The pool floor and walls must be properly surveyed to ensure that there has not been any structural movement that might suggest that the state of the pool structure does not justify liner renewal. This is carried out using straight edges and spirit levels. If there are any serious cracks in the structure invasive investigation may need to be undertaken by cutting concrete out to ascertain what is causing the movement.

Pool pipework

Leaking pool pipework wastes water and can cause structural distress in the swimming pool walls and so it is necessary to pressure test the pipework. This involves the disconnection of every pipe in turn, sealing the ends and then introduction of compressed air up to the design working pressure of the pool plumbing.

The pressure is held for a while to ensure that there are no pinhole leaks and then the pipework has to be reconnected to the pool equipment both in the plant room and at the pool wall end of the pipe.

Liner Installation and filling the pool with water

Installation of the special underfelt, including gluing to the walls and steps takes about a day. The installation of the liner, the application of a vaccum to suck it into a place and the controlled filling of the pool can take 3 or 4 days depending on the water pressure available.

Pool paving subsidence

The pool paving is often found to have subsided and this is also an appropriate time to fix that as well. This involves taking up the area of pavement concerned, filling and compaction of the subsoil and relaying the paving.

Renewal of Pump and Filtration System

We can also undertake the repair and maintenance of pool pump and filtration systems for all types of pool. This is far more straightforward and less costly than liner renewal

Renovation of pools built by builders

Builder Built swimming pools

We sometimes receive requests to provide quotations to renovate "builder built pools". These are pools built in concrete blocks by French and English masons / bricklayers - most often on a one-off basis because they have done a good job on the renovation or construction of a house and the house-owner has learnt to lean on their expertise.

This is a typical builder built swimming pool.

This pool was probably built partly on filled ground (that has since subsided) and lined with fibreglass - a very expensive and risky approach to pool construction because the concrete blocks expand and contract under temperature change and the slightest movement in the wall foundations results in cracks in the fibre glass and a very leaky pool. We understand that the one in the photograph was used for one season only!

Most builder built pools will suffer this sort of fate or similar because the masons / bricklayers are inexperienced in pool construction - not because they are poor builders!

Maintain the old pool full of water

There is another issue involved here that rarely occurs to most people. If a pool is full of water it is very unlikely to suffer from structural failure because the water pressure pushes the walls back against the surrounding ground. If the pool leaks badly then it invariably empties out over the winter when not in use and it is then very vulnerable to the highest ground water pressure that always occurs in March / April of the next spring. So if a pool has been maintained full of water it is more likely that we will be able to renovate it.

Can Bluepools renovate such pools?

Can we renovate such a pool? - the answer is probably yes - but we may not be able to provide our normal guarantees on structural life. If we are doubtful about the structure we can perhaps build a smaller pool inside the existing one.

We may be able to upgrade an existing ceramic tiled / fibreglass lined / painted pool pool to a liner pool - if the pool structure is totally stable and shows no sign of structural movment. If you want us to look at this please fill in the contact form and type in pool renovation in the last box.


Is Relining and Renovation Justified as an Investment?

Yes if the pool is put into an "As New" condition

The answer is yes If full renovation is undertaken as described above. This should include a detailed structural assessment carried out by a pool structure expert to ensure that the pool can be put into an "As New" condition when the renovation is complete.


The final cost will probably be less than half the cost of a new pool of the same size and the cost of removal of the old pool will be avoided.

Old pool removal costs are seldom less than 5000 euros if filling material has to be imported and so from an investment viewpoint comprehensive renovation is justified.

What will happen if we take a chance and just fit a new liner?

It is very likely that the liner will leak through joints around the through the wall pool equipment.