01 · Project overview

What is this project?

Residential Foundation Radon Barrier, 3,000 square metres in 2019. The products on the job are Rayston Spray Primer 150, Rayston Spray D50.

The crew used the Rayston Proof Radon Gas Shield system.

First, Rayston Spray Primer 150 foam evened out the walls.

Then a grey Rayston Spray D50 membrane formed the waterproofing and radon gas barrier.

Krypton Chemical supplies the resin system. The duty is ordinary and strict: keep water, wear and weather on the right side of the structure, and do it in the details as well as in the open field.

ProjectResidential Foundation Radon Barrier
Area3,000 m²
Year2019
LineWaterproofing
ProductsRayston Spray Primer 150, Rayston Spray D50

02 · The challenge

What did this structure ask of the system?

A roof is a field of outlets, laps and edges, and the weather works on all of them. Water does not leak through the middle of a sound bay. It gets in where the detail was thin or where the deck has started to move.

Residential Foundation Radon Barrier has to be closed as one system, details first, and then left to do its job without a second visit every summer. Across 3,000 square metres, a thin spot is not a small repair.

Applicator spraying Rayston Spray Primer 150 foam on a foundation wall beside the excavation
Applicator spraying Rayston Spray Primer 150 foam on a foundation wall beside the excavation

03 · The solution

Which system was trusted here?

The system trusted here is the one named for the job: Rayston Spray Primer 150, Rayston Spray D50. It is chosen because it matches the substrate and the exposure, not because every building wants the same can.

On a roof the membrane has to follow outlets and upstands at the same thickness as the field. An exposed aromatic film takes a topcoat if the colour will be seen.

04 · Application

How is the system built?

The products named for Residential Foundation Radon Barrier are applied as one build-up, details before the field. Outlets, edges and changes of plane are closed first, with the same materials as the main area. A system that changes product at the difficult line is a system with a future peel.

The line is Rayston Spray Primer 150, Rayston Spray D50. The deck is dry, the temperature is inside the range that product allows, and the next coat follows while the window is open. Leaving a detail for the following week is how these jobs come back.

On Residential Foundation Radon Barrier the roof fails at the edge long before it fails in the field. Parapets, outlets, plant plinths and laps are detailed first, with the same system, at the same thickness. A bay can be perfect and the ceiling still stains if the outlet was a collar of mastic.

The deck moves between the hot afternoon and the night. The membrane has to move with it. A rigid coat maps every crack in the substrate onto the ceiling. Thermal movement is the reason an elastic system is on a roof like this, not a preference for a particular can.

Where the film stays in the sun, colour and waterproofing are two layers. The membrane keeps the water out. An aliphatic coat keeps the appearance. Skipping the topcoat because the membrane is already waterproof is how a sound roof starts to look failed, and then gets recoated for the wrong reason.

05 · Results

What does a job like this stand behind?

Residential Foundation Radon Barrier has one standard. The coating is still doing its job after the building is back in use, at the details as well as in the middle. The area on this job is 3,000 square metres.

Figures for cure, thickness and strength, where they are given, come from the product data sheets. They are not a test cut out of this building.

What this asks of Residential Foundation Radon Barrier is workmanship at the difficult line. The open field is the easy part of a resin job. Outlets, edges, penetrations and changes of plane are where thickness goes missing, and where water or wear finds the gap. The same products and the same care belong there, and the cure is allowed to finish before the building goes back into use. That is the difference between a coating that was simply applied and a system that stays in service.

06 · Products

Products on this job

Rayston Spray Primer 150

Named on this project. The data sheet carries the application window and the typical figures.

Rayston Spray D50

Named on this project. The data sheet carries the application window and the typical figures.

07 · FAQ

Frequently asked questions

Where is this project?

Residential Foundation Radon Barrier. the place named on this project

When was the work done?

2019.

Which products were used?

Rayston Spray Primer 150, Rayston Spray D50.

Why are the details done first?

Outlets, upstands and joints are where water gets in. They are closed with the same system as the main area.

Are the figures measured on this job?

No. Thickness, elongation and cure times quoted here are the products’ typical data.

08 · Photos

On site

Residential foundation radon barrier: grey polyurea membrane on a long foundation wall
Residential foundation radon barrier: grey polyurea membrane on a long foundation wall
Applicator spraying Rayston Spray Primer 150 foam on a foundation wall beside the excavation
Applicator spraying Rayston Spray Primer 150 foam on a foundation wall beside the excavation
Grey Rayston Spray D50 membrane wrapping a foundation wall corner and footing
Grey Rayston Spray D50 membrane wrapping a foundation wall corner and footing
Yellow foam primer and grey membrane meeting behind the props of the slab above
Yellow foam primer and grey membrane meeting behind the props of the slab above
Finished grey radon barrier on a foundation wall in front of the apartment blocks
Finished grey radon barrier on a foundation wall in front of the apartment blocks
Grey radon barrier membrane down a foundation wall into the trench, residential building
Grey radon barrier membrane down a foundation wall into the trench, residential building
Long foundation wall with the grey membrane under scaffolding, residential site
Long foundation wall with the grey membrane under scaffolding, residential site

Talk to our technical team about your project

Tell us the substrate, the traffic and the exposure.

Contact us

Leave a Comment

Your email address will not be published. Required fields are marked *

Scroll to Top