Air barriers, systems of materials designed and constructed to control airflow between a conditioned space and an unconditioned space, is the primary air enclosure boundary that separates indoor (conditioned) air and outdoor (unconditioned) air.

Air Barrier

An expansion joint, or movement joint, is an assembly designed to safely absorb the heat-induced expansion and contraction of construction materials, to absorb vibration, to hold parts together, or to allow movement due to ground settlement or earthquakes.

Expansion Joint Systems & Covers

Restoration pertains to the process of repairing, cleaning, restoring, etc. We have specialized in the masonry restoration, preservation, and conservation of buildings for many decades.

Restoration

Waterproofing pertains to a wide variety of specialty applications for the prevention of water intrusion. Our waterproofing services always include professional installation according to manufacturer and product requirements. We keep water out of buildings, homes, and parking garages. Whether waterproofing a new or existing structure, regardless if the service is preventative or reactive, our waterproofing services keep the water out

Waterproofing

Caulking is both the process and material (also called sealant) to seal joints or seams in various structures and a wide variety of applications for the prevention of water intrusion.

Caulkin

This gallery will continue to grow with examples of our work. Check back often to see what our most recent projects have included.

Before & After

There are no adequate words to thank you for all your kindness to me. Thank you from a very grateful heart.

Millie M., Homeowner

Your teams are great professionals! I am very impressed with every one of them! I think they have done a perfect job and I am delighted. Bravo to all.

Elisabeth P., Homeowner

You all are wonderful to work with - your patience and commitment is above and beyond.

Kerri Ann F., O'Neill Development Corporation

Whenever any type of waterproofing is needed Randy Alverson and his employees would be our only telephone call. We have been very pleased with the quality of their workmanship. They are punctual, knowledgeable, and professional and our clients agree.

Andy C., President of Stone Works, Inc.

Chamberlin-Washington always goes the extra mile to satisfy my clients wishes.

Jack S., Property Manager

Many thanks for your excellent work; it is much appreciated.

Steve B., Homeowner

Randy came to my house, surveyed the situation, and a few days later, CWI provided a comprehensive plan to resolve my problem. CWI’s work crew arrived as scheduled and they were GREAT!! They were polite, neat and very thorough and completed the work as scheduled. I recommend Chamberlin-Washington without any reservation.

P.F., Homeowner in Potomac, MD

Chamberlin-Washington always goes the extra mile to satisfy my clients wishes. Jack S., Property Manager Your teams are great professionals! I am very impressed with every one of them! I think they have done a perfect job and I am delighted. Bravo to all. Elisabeth P., Homeowner All of your work looks beautiful, thank you! Natalie M., Homeowner Whenever any type of waterproofing is needed Randy Alverson and his employees would be our only telephone call. We have been very pleased with the quality of their workmanship. They are punctual, knowledgeable, and professional and our clients agree.

Joseph H., Gilford Corporation

Ben Jackson

Thank you so much for the effort. It's very much appreciated. I wish some of our other subs were as diligent as you guys are. Plus let Randy know that the commission folks said that the waterproofing job done at Remote Inspection Facility was the best they have seen on the campus wide project. Keep up the good work!

All of your work looks beautiful, thank you!

Air Barrier

Expansion Joint Systems & Covers

Restoration

Waterproofing

Caulkin

Before & After

New Rain Garden

Patio & Pavers

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