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In-House DIY SPF Application: 6 Things To Remember

In-house teams might have to apply SPF during emergencies, and no team can accommodate your property’s immediate need. If you’re chasing an SPF application deadline, here are six steps you can follow to apply your SPF properly. We strongly recommend only using these steps as a last resort during an emergency – otherwise, wait for your spray polyurethane foam applicator to finish their queue before reaching you.

Application Zone Damping

Damp walls, corners, and other surfaces can quicken the curing process. SPF typically needs much time to cure properly. With water, it can quickly bind to walls and surfaces effectively. Moisture saturates the foam and makes it easier to manage during installations.

To apply this step, use a water spritzer on the surfaces you’ll apply SPF. Most teams use a special misting bottle or a clean wet rug to wipe the surfaces with moisture.

Acetone for Faster Cleanups

This solvent dissolves the uncured excess foam through a chemical reaction leading to the latter’s breakdown and evaporation. Acetone can remove the foam quickly, but it can’t do anything once the spray foam has already been cured. Even professional SPF applicators commit small errors during the application process.

Use Spray Guns

With a spray gun, your in-house team can achieve a uniform application. Accurate spray gun use ensures consistent SPF layer sizes, achieving the best insulation structure after application. High-quality spray guns are more expensive, but these have features that achieve accurate coating and foam layering on the surface. It also helps applicators to apply SPF in one or multiple directions.

Have a Small Knife Handy

Small knives help cut through cured or uncured foam before applying acetone to remove excess materials. Removing excess uncured SPF by hand can endanger your skin or render your gloves useless after the application. Use a knife with a long lightweight handle.

Use a Box to Hold Your Sprayer

SPF can expand without warning inside its containing bottle. We strongly recommend setting it inside a cardboard box on the floor. Doing so allows you to catch excess materials that can expand. Disposable boxes make the excesses easy to dispose of after the application.

Extension Tubes

High-quality extension tubes allow applicators to shift the spray pattern. The tube can pump all the SPF outside by priming the tube and can. Can and tube nozzles should only touch lightly to prevent excess pressure during application. Most hardware suppliers include these with your SPF product to help you reach hard-to-reach corners and areas of the insulation zone.


Despite the usefulness of the steps we’ve listed here, we still recommend using registered and certified applicators with in-depth experience and knowledge in rendering excellent SPF applications. Safe and top-notch jobs start with proper personal safety equipment, care for the environment, and tried-and-proven application methods.

You can always count on us at Ener-Spray to provide high-quality SPF applications with our well-equipped, experienced, and knowledgeable team ready to handle any reroofing, fireproofing, slab lifting, and insulation needs. Contact us today to learn more about our services and get a free consultation.