Four Seasons SUNROOMS

We love Four Seasons Sunrooms brand because they deliver a top quality product with innovative features.

Since our partnership in 1989,  Four Seasons has become the premier sunroom manufacturer in the world, and Mulder Glass has become the premier design/build sunroom company in West Michigan.

Mulder Glass offers two options for home additions

#1  Four Seasons Brand Rooms 


#2 Traditional Lumber-Framed Rooms

Our expertise with both types of construction (aluminum and wood-frame) allows us to provide you with nearly unlimited options. 

 Nearly all of our products qualify for Energy Star – ask today!


Silas Mulder - (269) 345-6796

           Cell - (269) 217-9858

E-Mail -

Wood Interior Conservatory - Maple Lake - Paw Paw, MI
Vinyl Victorian Conservatory - Freestanding - Grand Rapids, MI
Four Seasons Cathedral - Palmer Lake - Colon, MI
Vinyl Victorian Conservatory off Kitchen - St. Joseph, MI
Wood Framed Addition with Circle-Top Window - Mattawan, MI
Oak Beam Four Seasons Room - Sugarloaf Lake - Schoolcraft, MI
Hip-Roof Four Seasons Conservatory - Augusta, MI
Vinyl Victorian Conservatory off Framed Addition, Vinyl Deck Rails - Paw Paw, MI
Four Seasons Vinyl Cathedral - Portage, MI
Framed 12' x 16' Addition with Circle-Top Window - Kalamazoo, MI
Aluminum Wall Patio Room with Extended Overhang - South Haven, MI
15' x 17' Vinyl Conservatory w/ Screen Room Below - Lake Doster - Plainwell, MI
Composite Railings & Deck Boards, New Vinyl Lap & Shake Siding - Richland, MI
Custom Conservatory with Glass/Stainless Steel Curved Railings - Otsego, MI
13' x 10' Four Seasons Bronze Conservatory - Maple Lake - Paw Paw, MI
12' x 20' Four Seasons Cathedral - Richland, MI
15' x 17' Four Seasons Conservatory w/ Shed Below - Mattawan, MI
Wood Beam Four Seasons Sunroom, Conversion from Existing Porch - Portage, MI
  Past Projects Shown Above...

Build Your Project with Energy Star!    Learn About Green Building

View Completed Projects by Mulder Glass



We could not be happier with the planning, workmanship, quality and service of your company. We love our Four Seasons Sun room. Please put us on your list as a very satisfied customer.
    Harold and Rennee Miller — Hastings, MI

We pretty much live in our sunroom; even on a cloudy day it seems brighter. We enjoy hearing the birds sing, watching the clouds sail by and listening to the tree frogs at night. Our sunroom is a great place to be and experience creation.

    John Hamilton — Kalamazoo, MI

The installation was done in a proffessional and timley manner. No complications. The performance of the sunroom is to our satisfaction. We enjoy it very much.

   Bill and Heidi Brennon