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DIY Hot Tub Building, Materials and Construction Related

How to Make the Perfect PVC Solvent Weld Joint for Hot Tub Plumbing

Posted on November 4, 2022October 29, 2026 by buildahottub
Close-up of a freshly solvent-welded white PVC elbow joint on 2 inch hot tub pipe with purple primer visible around the socket
04
Nov

A step-by-step guide to leak-free PVC solvent weld joints for hot tub plumbing, checked against Oatey, Weld-On, Griffon and Tangit instructions, including primer and cure times.

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Posted in DIY Hot Tub Building, Materials and Construction Related
Reviews & Info

Wood-Fired Hot Tub Review: An Honest Weekend With an Off-Grid Tub

Posted on October 26, 2022October 29, 2026 by buildahottub
Wood-fired hot tub with a stainless steel chimney in a garden at dusk
26
Oct

I spent a weekend with an off-grid, wood-fired hot tub. The fire worked, but with no thermostat, filter or sanitiser it overheated and the water had gone off by the next morning. Here’s my honest review and how I’d make one work.

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Posted in Reviews & Info
Support & Maintenance

Water in a Hot Tub Air Blower? How to Dry It Out and Stop It Happening Again

Posted on October 19, 2022October 29, 2026 by buildahottub
Hot tub air blower mounted on a shelf in a control room with its air pipe rising in a loop
19
Oct

Why water gets into a hot tub air blower, how to dry it out safely, and how a check valve plus a high blower or Hartford loop stops it coming back.

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Posted in Support & Maintenance
Support & Maintenance

How to Restore or Repair an Old Hot Tub: A Step-by-Step Checklist

Posted on October 18, 2022October 29, 2026 by buildahottub
Old acrylic hot tub with its cabinet panel removed, showing the pump, pipework and spa pack during restoration
18
Oct

A step-by-step checklist for restoring or repairing an old hot tub or spa: structure, leak testing, identifying and flushing the pipework, checking the pump, blower and spa pack, and getting the water safe again.

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Posted in Support & Maintenance
Air Source Heat Pump Related

5 Things to Consider Before Fitting an Air Source Heat Pump to Your Hot Tub

Posted on October 13, 2022October 29, 2026 by buildahottub
Air source heat pump beside a covered hot tub in a garden with plenty of clear space around it
13
Oct

An air source heat pump can cut your hot tub running costs by more than half. Here are the five things to check before you buy one.

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Posted in Air Source Heat Pump Related
Materials and Construction Related

Hot Tub Waterproofing, Tile Adhesive and Grout: What to Use and How

Posted on October 13, 2022October 29, 2026 by buildahottub
In-ground concrete hot tub shell coated in green waterproof membrane with blue mosaic tiles being fixed to the walls
13
Oct

How to waterproof a DIY block or concrete hot tub, from preparing the surface and applying a pool membrane to the flood test, adhesive and epoxy grout. Includes a correction to my old PVA advice.

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Posted in Materials and Construction Related
Support & Maintenance

Noisy Hot Tub Pump? How to Diagnose the Noise and Fix It

Posted on October 7, 2022October 29, 2026 by buildahottub
Hot tub jet pump with unions and gate valves in a control room, ready for inspection
07
Oct

Humming, rattling, gurgling or screeching? How to work out why your hot tub pump is noisy, from a failed capacitor or blocked impeller to cavitation and worn bearings, and what to do about it.

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Posted in Support & Maintenance
DIY Hot Tub Building, Support & Maintenance

The Importance of Configuring a Spa Pack

Posted on September 28, 2022October 29, 2026 by buildahottub
Configuring a Spa Pack
28
Sep

Configuring a Spa Pack is perhaps the last thing on your mind. I know from my own experience building a tub, getting things done as quick as possible is quite often a priority. You just want to fill it up, heat and get in it. This is the end goal.

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Posted in DIY Hot Tub Building, Support & Maintenance
Design / Ideas Related, DIY Hot Tub Building

Can I Use a Liner on My DIY Hot Tub? (Why I Don’t Recommend It)

Posted on September 12, 2022October 29, 2026 by buildahottub
Wrinkled blue vinyl liner pulling away around a jet fitting in a DIY hot tub
12
Sep

You can technically put a pool liner in a DIY hot tub, but liners aren’t rated for hot tub temperatures and there are no jets designed to seal through them. Here’s why I don’t recommend it, and what to do instead.

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Posted in Design / Ideas Related, DIY Hot Tub Building
Case Studies / Example Projects

I Love It When a Plan Comes Together: Rob’s Custom DIY Hot Tub (USA)

Posted on September 8, 2022October 29, 2026 by buildahottub
08
Sep

Rob’s space didn’t suit a standard plan, so we drew up a custom design with L-shaped seating and jets on one side. Here’s how his block-built DIY hot tub came together.

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Posted in Case Studies / Example Projects
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Recent Posts
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  • Hot Tub Seats, Benches and Loungers: How to Build Them Comfortable
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See your hot tub before you dig, in Tub & Pool Designer Pro
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