Materials and Systems We Install
R&L Ohana Insulation installs mechanical insulation, plumbing insulation, firestopping, acoustical insulation and joint sealant systems on commercial construction throughout Hawaii. We work from submittal through final inspection, and we install to the specification as written — material, thickness, vapor barrier, jacketing and finish.
The systems below cover the scope we self-perform. Specific products are selected per project specification and submittal approval.
For how we run each scope, see our services
Chilled Water and Low-Temperature Piping
Chilled water, dual-temperature and below-ambient piping, where vapor drive is the controlling concern. We install closed-cell elastomeric and rigid fiberglass systems with a continuous vapor barrier, sealed longitudinal seams and butt joints, and vapor-sealed fitting covers. Hangers are insulated through with rigid inserts and shields to prevent thermal short-circuiting and condensation at support points. Finishes include ASJ, PVC fitting covers, and aluminum or stainless jacketing where exposed or exterior.
Hot Water and Domestic Hot Water Piping
Heating hot water, domestic hot water and recirculation lines. Rigid fiberglass pipe insulation with a factory-applied vapor retarder jacket is standard, with molded fitting covers at elbows, tees, valves and strainers. Thickness per specification and Hawaii energy code. Exposed runs in finished spaces receive PVC jacketing for a clean, cleanable surface.
Steam and Condensate Piping
High-temperature service requiring material rated to the operating temperature. We install mineral wool and calcium silicate systems on steam, condensate return and high-temperature equipment piping, with aluminum or stainless jacketing, removable and reusable covers at valves and flanges where specified, and expansion provisions on long runs.
Refrigerant Piping
Suction and liquid line insulation using closed-cell elastomeric tube and sheet. A continuous vapor seal is the entire point of this scope — every joint adhered, every termination sealed. Exterior and rooftop runs receive UV-protective jacketing or coating, which is where most refrigerant insulation failures in Hawaii begin.
Storm, Waste and Roof Drain Piping
Condensation control on horizontal storm, overflow and roof drain bodies, and on waste piping where specified. Closed-cell or fiberglass with a sealed vapor barrier, including drain body and fitting coverage, not only the straight runs.
Ductwork Insulation
Supply, return and exhaust duct systems. Flexible fiberglass duct wrap with FSK facing on concealed duct, rigid fiberglass board on exposed duct, and duct liner where specified for thermal and acoustical performance. Seams are stapled and sealed with FSK tape or mastic to maintain the vapor barrier. Exterior duct receives metal jacketing with sealed laps and weatherproofed seams.
Equipment, Vessel and Tank Insulation
Air handlers, pumps, heat exchangers, chillers, boilers, breechings, storage tanks and expansion tanks. Board, blanket or spray-applied systems depending on surface geometry and temperature, finished with metal jacketing, canvas and mastic, or removable insulation blankets at equipment requiring routine service access.
Jacketing and Finishes
PVC fitting covers and jacketing, embossed and smooth aluminum, stainless steel, ASJ and ASJ+, canvas with lagging adhesive, and self-adhering weatherproof membrane for exterior and rooftop applications. Banding, sealant and closure per detail. In food service, medical and finished public spaces, the finish is what the owner sees for the next thirty years, and we treat it that way.
Firestopping
UL-classified through-penetration and joint firestop systems, installed to the listed system and documented to the UL system number for inspection.
Acoustical Insulation
Sound attenuation batts, duct liner and mechanical room treatment, installed where STC performance is specified.
Joint Sealant
Expansion and control joint sealant systems, fire-rated and non-rated, at floor, wall and ceiling conditions.
Applicable Specification
22 07 00
Plumbing Insulation
23 07 00
HVAC Insulation
07 84 00
Firestopping
07 92 00
Joint Sealants
09 81 00
Acoustic Insulation
Manufacturer Partners
We install manufacturer-approved systems from 3M, Owens Corning, Knauf, Armacell, Johns Manville, Hilti, CertainTeed, and other leading manufacturers. Submittals are prepared to the specified manufacturer, and alternates are proposed only when requested.
Bidding a project? Get R&L On It.
Working on a bid and need a scope reviewed? Send us the mechanical and firestopping sections and we will price it .