Skip to content
Routes 10 & 202 • Southwick, MA

Your Hometown Supplier of Lumber, Building Materials & Hardware Since 1976

ACE Garden Soil on sale 2 for $12

Paint
Lawn & Garden
Lumber
Hardware

Newest Items

Simpson Strong Tie Outdoor Accents

Outdoor Accents is a new line of decorative hardware, featuring ornamental wood connectors and fasteners. Now you can bring both beauty and strength to outdoor living structures. This is corrosion-resistant hardware accommodates nominal and rough lumber sizes.

Watch YouTube Video

Benjamin Moore® REGAL® Select Exterior Paint‎

Durable finish resists fading, cracking and peeling so your home’s exterior looks freshly painted for years to come. Mildew resistant even in humid conditions. Engineered with Gennex® Color Technology.

Benjamin Moore Paint Calculator

Coast of Maine Stonington Blend Platinum Grower's Mix

An OMRI listed, complex “super soil” designed for high performance growing in containers and large pots. You will not find a better soil for your tomatoes! Growers have also discovered the tremendous results of using Coast of Maine Stonington Blend Growers Mix!

Watch YouTube Video

Wet & Forget Outdoor Hose End Rapid Application

The new Wet and Forget Hose End makes outdoor cleaning quick and easy. The much-awaited hose end was designed with a proprietary nozzle for higher reach and more coverage per bottle. It attaches directly to your hose & sprays up to 30 feet, allowing you to clean hard-to-reach areas.

Watch YouTube Video

Drive-In Service

Drive up to the lumber yard for easy order pick-up.

Our Selection of...

PLUMBING & ELECTRICAL

At Interstate Building Supply you can find:
We carry stove pipe black & galvanized plus we carry metal bestus pipe

• A large selection of stems and faucet parts

• Piping for both rough and finish plumbing

• Heating & ac duct work

• Toilets and repair parts

• Vanities and sinks
Read More

AUTO & HOUSEWARES

• A large selection of car cleaning chemicals

• Tow hitches & Fuses and bulbs
• RV anti freeze & wiper cleaner

• A large selection of canning jars & accessories
• Storage totes & drawers

• Appliance repair parts
Read More

PAINTS & STAINS

  • Benjamin Moore Paints and Stains
  • Paintbrushes
  • Handy paint containers
  • Deck Stain
  • Cheesecloth

LAWN & GARDEN

  • Scotts products including: Ortho and Miracle Grow potting soils for variety of plants
  • Johnathan Green grass seed including: Black Beauty, Kentucky Blue, and more
  • Johnathan Green soil improvements: Love Your Soil, Green Up, Mag-i-kal, Verigreen, and Winter Survival
  • Bondie pest control
  • Garden hoses and parts
  • Grass seed spreaders
  • Wheelbarrows
  • Bird feeders & bird seed
  • Ice melt for your winter weather needs