Can you Build a DIY Lap Pool?

One of the most popular questions I get asked is whether you can build a DIY lap pool in your backyard. The short answer is YES! You can!

 

For those who don’t know what a lap pool is, it’s a regular pool with longer, narrower dimensions so you can swim laps in your pool without needing a swim jet.

 

Here’s a few things to watch out for when constructing your Lap Pool 

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Construction

 

Building a lap pool is very similar to a plunge pool; the biggest difference are the dimensions. Just like a plunge pool, you have multiple construction options. These can be both in ground and above ground.

 

The first is the use of CMU (concrete masonry unit) blocks. These are very simple and easy to install. You put the block in place, strengthen it with rebar, and then pour concrete into it.

 

The second option is to use insulated concrete form (ICF) blocks, which are expanded polystyrene blocks that act like Legos for adults. You stack these up, fill them with rebar and concrete, and have a structure ready. This will give you an insulated but strong lap pool wall.

 

The last option is using concrete forms. While possible, it is very prohibitive due to the long length of the pool and not recommended for a lap pool.

 

Finishing 

 

When it comes to finishing your lap pool,  you have many options such as painting, tiling, or applying a pool liner. Each has its own pros and cons.

 

If painting, it is best to use epoxy-based paint for your lap pool. These tend to be sturdy, last for many years, and are a cost-effective solution. 

 

Tiles are always a safe bet and are a versatile solution.

 

While pool lining can be a great solution, it is best to leave this to the pool pros as it is very technical to cut and line the liner properly. 

 

Heating

 

While not essential, I highly recommend that you install some sort of heating system for your pool. Electrical systems are way too expensive and not recommended at all. This is because of the volume of water that you will have and in general, electric heaters are more suited to smaller bodies of water like hot tubs for example. I suggest that you go for an Air-Source Heat pump or a gas system for your heating needs. 

 

You can find a few great models on my website here.

 

Plumbing

 

A lap pool is very similar to a plunge pool in terms of plumbing as well. Here’s a few things to take into account when plumbing in your hot tub. 

 

If you’re going to keep your control room below the water level, you can use a hot tub pump, which is cheaper. Since they’re fed by gravity, they have to be below the water line. 

 

If you’re going for a traditional pool set up, you can use a pool pad, a swimming pool self-priming pump, and a sand filter. A sand filter is the best choice, as it is cost-effective and most suitable for a pool of this size. Yes, larger cartridge filters do exist, but in general, a Sand Filter is the way to go on this kind of application.

 

Sanitation

 

You have many options when it comes to keeping your lap pool clean and sanitised, 

You can choose the traditional options of chlorine and bromine. Other options include using UV light, active oxygen, or Ozone. While I wouldn’t recommend Ozone, it has its pros, but that depends on the circumstances. 

 

A popular choice at the moment is salt – it is not quite the “throw some salt in and forget it” but the amount of maintenance is less than a traditional chlorine or bromine pool

 

Covering

 

Lastly, regarding covering your lap pool, you do not need an insulated cover because it is not a hot tub. The only purpose of covering it is to prevent leaves and other debris from falling into it. 

 

You could also choose to leave it uncovered. Be sure to upkeep your lap pool regularly; it will serve you well for many years. 

 

In a Nutshell…

 

To summarise, you can build a lap pool yourself if you choose to do so in your backyard. Be sure to follow the instructions and use suitable quality materials and equipment. 

Can I Help You?

If I can help you in any way I would love to hear from you. You can get in touch using the form below.

Thanks - Andi

 

Hi, Andi here. I own Buildahottub.com and also write all of the articles and info pages on the site. Some years back now, I built my own hot tub but struggled to find the information I needed. So, once my tub was complete, I started this website to help others in their own pursuit of hot tub and plunge pools DIY building information.

Today, I've helped over 1000 DIY customers just like you all over the world build hot tubs and pools. Have a good look around the site, there are lots of resources here. Please do get in touch if I can help you. - Cheers, Andi