Closed-cell spray foam is a 2 lb foam, has an R-value of R6.5 per inch and is used in applications where an air and vapor barrier is needed along with the need to deliver high R in a small space – for example, it is the only material that can deliver R19 into a 2×4 construction wall (R19 is building code minimum for exterior walls).
Both products can be delivered in two formats – high pressure or low pressure.
High pressure applications require very heavy equipment in the form of trucks full of diesel motors, big compressors and generators. The chemicals atomize a significant amount into air on delivery, outgas during the curing process and require a 24-hour re-occupancy time – this means if you have this done in your home, you cannot be in the home during application nor can you enter your home for 24 hours after it is done.
Low pressure systems require much less equipment, atomize much less during application, and they do outgas during curing period, but only have a 2-hour re-occupancy time – you still cannot be in the home during application, but you may return within 2 hours once the job is complete.
Mainline uses a low-pressure, closed-cell spray foam exclusively for our projects as it delivers exactly the versatility we need to fix uncomfortable homes, convert 3-season to 4-season homes or for major renovation projects. It also delivers the highest quality air, vapor and insulation in a single product application, is less impactful on our customers’ schedules and is better for our environment.
Mainline recently upgraded its spray foam capability by retrofitting one of our trailers with a Nitrosys Spray Foam system developed by Spray Foam Systems, LLC of GA and co-partnered with our friends at Dr. Energy Saver.
Here’s a short list of projects that we can offer our customers using our low-pressure, closed-cell foam rig:
- Fix cold or humid room over crawl spaces – called encapsulation of the crawl space, we shut off air and vapor leakages and temperature stabilize the crawl space, which makes the rooms above more comfortable.
- Fix cold or humid basements – we encapsulate the sill and rim joist areas, which stops air and humidity infiltration.
- Insulate and seal off stone walled basements – in much older homes, lots of cold air and humidity seeps in through the stone wall foundation along with the sill and rim areas. We fill all crevices and cover the entire wall, then cover with intumescent paint for the ignition/thermal barrier. Problem fixed!
- Conversion of elevated patio rooms into 4-season rooms – we air seal and insulate under the floor and also install a ductless mini-split system to add high-efficiency heating and cooling.
- Upgrading older homes during reconstruction or major renovations – many of these homes have 2×4 construction walls, and we are able to get to code and seal off all air leakage points through the walls. We may also perform basement or attic work at the same time to make the entire home more comfortable and energy efficient.
- Making rooms over garages or entire attics into conditioned spaces – we basically use the foam to air seal and insulate roof lines and gable ends to required R-values per local building code and then add a ductless mini-split heating and cooling system. More of the home is now available as useful living space and much more energy efficient.
- Fixing leaky ducts in attics – homes with central air conditioning and heating systems use ductwork to move air through the home. If they are old and in the attic, then they create a very inefficiently and underperforming system. We encapsulate the trunk and branch lines, and this seals and insulates them. Heating and AC systems run less, and more of home is comfortable and energy efficient.
The common theme here is we make homes more comfortable and energy efficient and have the skills and equipment to deliver the best results available! Contact us today for your free home consultation and perhaps our new Nitrosys rig will be commissioned to get the job done for you.