Exterior finish systems/exterior cladding systems

Dick's Sporting Goods

Optimum Building Systems has something for your site and budget.

We offer exterior insulation finish systems (EIFS), exterior cement siding, and other finish applications from quality manufacturers such as Sto Corp., James Hardie, Metro Brick, Eldorado, and Laminators, Inc. We are certified EIFS Smart Applicators through the AWCI EIFS Smart Program; our AWCI EIFSmart ID is BB6103.

Hammondswood at Chestnut Hill, MA

Premium low maintenance siding options

From vinyl siding to stucco, composite metal panel systems, and corrugated siding, OBS has it all!

Capital Grille, Burlington, MA

Stucco cladding from the world's leading manufacturers

Stucco cladding is low maintenance and provides a beautiful finished look to any commercial property. Optimum Building Systems' staff brings over 50 years combined experience to every job.

Old Navy, Leavitt Parcel, Marlborough, MA

Waterproofing and caulking for the most demanding jobsite

Exterior cladding systems demand adherence to stringent waterproofing and caulking requirements as dictated by the manufacturer. Optimum Building Systems, through Palace Construction, is a member of the EIFSmart Contractor National Registry. OBS is committed to providing our customers with materials and installation of exceptional quality.


  • Basic barrier systems
  • Water management systems
  • Hard coat extruded and mechanically fastened EIFS
  • Decorative and elastomeric coatings
  • Cement board stucco
  • Insulated concrete forms


  • Thin coat veneer systems
  • 2- and 3-coat veneer systems
  • Ornamental cornice plaster
  • Specialty plasters (colored and textured)


  • Thin set and thick set brick
  • Brick tile
  • Cultured stone veneer


  • Vinyl
  • Hardie plank
  • Certaineed siding
  • Nichia siding
  • Cedar plank and shake
  • Metal panel and trims
  • Corrugated panel and siding
  • Wood composite
  • Composite metal panel


  • Cementitious spray fireproofing
  • Gypsum spray fireproofing
  • Spray foam insulation


  • Exterior/interior caulking
  • Fluid applied below grade waterproofing
  • Damp proofing above or below grade
  • Fire stop caulking
  • Clear water repellent sealers
  • Traffic and pedestrian deck coating
  • Below grade sheet membrane waterproofing
  • Fluid applied air and vapor barriers
  • Sheet membrane air and vapor barriers