Our Guarantee

We strive to be valued partners for the General Contractors with whom we work, and everything we do is based upon our four cornerstones.


We are committed to always doing the right thing and staying true to our word.


We maintain quality control measures that ensure our client’s expectations are not only met, but exceeded.


We provide regular training to stay on top of industry best practices.


We strive for zero lost-time accidents. Work environment safety that is second to none.

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Our Services

CHM Weatherguard offers a variety of services within the Division 7 specialty area for commercial construction projects.

Joint Sealants

Cold applied polyurethane or silicone sealants typically at exterior and interior building joints in masonry walls, precast panel joints, hollow metal door frame perimeters, and at joints between dissimilar exterior surfaces. Also, at site concrete paving expansion and saw cut control joints and at interior slab on grade saw cut control joints.

Below-Grade Waterproofing

Fluid applied, or sheet membrane systems covered with drainage mats including termination detailing at below grade elevator pit and garage/basement backfilled walls and slabs.

Deck Waterproofing

Cold fluid applied, or sheet membrane systems covered with protection board and drainage mats at split slab and pedestal paver conditions. Prices vary depending on warranty requirements and leak detection methods.

Air Barriers

Cold fluid applied, sheet membrane systems or building wrap systems at above grade exterior sheathing/CMU/CIP concrete backup cavity walls.  Prices vary depending on system thicknesses and UV exposure limits.

Rigid Building Insulation

Extruded polystyrene or polyisocyanurate rigid Styrofoam board insulation at above grade cavity wall conditions behind the chosen exterior finish veneer.

Thru Wall Flashing

Rubberized flexible flashing and/or sheet metal flashing at thru wall conditions at exterior above grade cavity wall conditions. Most commonly found at window and door heads/jambs/sills, shelf angles, and base of wall.  Pricing can vary greatly depending on materials specified in Division 4 or Division 7 and the architectural details for the project.

Bituminous Dampproofing

Crystalline/Cementitious Waterproofing

Cold fluid applied dampproofing at above grade exterior sheathing surfaces in cavity wall conditions.

Penetrating cementitious waterproofing coating used primarily at the negative (inside) surface of below grade wall construction. Either as a backup to positive/blind side membranes in place on the opposite side of the concrete wall/slab or as a solution when those surfaces can no longer be reached.

Traffic Coating

Cold fluid applied membranes at terrace/patio conditions. Slip resistant and permanently UV stable with multiple color options based on manufacturer color charts. Available in systems for pedestrian traffic (including pavers) all the way up to heavy duty vehicular traffic.

Water Repellents

Clear penetrating sealers applied at exterior masonry/concrete surfaces to prevent surface staining. Graffiti control systems also available.

Joint Firestopping

Firesafing and rated sealant at interior CMU partition head of wall to deck and control joint conditions. CHM Weatherguard does not pursue MEP penetration firestopping.

Expansion Joints

Exterior wall to wall expansion joint assemblies.  Typically, a silicone faced compression seal, or a mechanical system measured on site and purchased from a manufacturer’s warehouse and delivered to the job site.  CHM Weatherguard does not pursue interior wall/floor/ceiling expansion joints on bid day typically but can provide this service upon further discussion with general contractors regarding lead times and project schedules.

CHM Weatherguard can help our clients with the services above as well as many others. We have hundreds of years of combined experience in all areas of Division 7. Let us know how we can help make your project a success!

Request a Quote for Your Next Project