BCI Insulation
Draft Stop & Fireblocking. Code-Compliant. Life-Safety Critical.
Protect your property and meet Massachusetts building code with professional draft stop and fireblocking installation by BCI Insulation.
About Fireblocking
Not optional. Required by code.
Draft stops and fireblocks are structural fire protection measures required by Massachusetts building code in walls, floors, and concealed spaces. They slow the spread of fire and combustion gases through concealed cavities — buying critical time for occupants to evacuate. BCI Insulation installs code-compliant fireblocking and draft stops on new construction, renovations, and existing buildings throughout Worcester County.
Fireblocking
Fire-rated materials installed in concealed wall and floor cavities to block the movement of fire and hot gases. Required by IBC and Massachusetts building code at specific locations in every structure.
Required in: Wall cavities · Floor assemblies · At floor lines · Concealed spaces
Draft Stops
Barriers installed in large concealed spaces (attics, crawl spaces, large floor/ceiling cavities) to subdivide the space and limit the spread of smoke and flame through the building structure.
Required in: Large attic spaces · Under-floor areas · Large concealed cavities
Code Requirements
Where fireblocking is required.
Stud Wall Cavities at Floors
Required at each floor level in concealed stud wall and partition cavities.
Horizontal & Vertical Connections
Where concealed horizontal spaces meet concealed vertical spaces, including soffits.
Drop Ceilings
At the top of concealed spaces formed by drop or suspended ceilings.
Top of Stair Stringers
At the top and bottom of concealed spaces formed by stair stringers.
Combustible Concealed Spaces
Any combustible concealed space used as a duct, or in a plenum condition.
Renovations & Additions
Any renovation or addition that opens up existing wall or floor assemblies.
Results
Life-safety performance you can count on.
IBC
Code compliant
Meets Massachusetts building code and International Building Code fireblocking requirements.
2hr
Fire resistance
Proper fireblocking can slow fire spread through concealed cavities for critical evacuation time.
100%
Permit ready
Installed to pass inspection on new construction, renovations, and additions.
1 day
Typical install
Most fireblocking and draft stop projects completed quickly with minimal disruption.
Why BCI Insulation
Installed right. The first time.
Fireblocking and draft stops must meet specific code requirements to pass inspection. BCI Insulation's team understands Massachusetts building code and installs every project to pass — the first time.
Free estimate · No commitment
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10+ Years
Serving New England
HERS Certified
In-house ratings
Mass Save®
Rebates handled
5 States
MA · NH · RI · CT · ME