Window and Door Replacement in Los Angeles
Maingreen Remodel & Construction does window and door replacement in Los Angeles, with all kinds of windows: sliding, arched, single or double-hung, bay, casement, awning, garden, egress and bow windows.
Whether you’re opting for home or commercial window installation, there are many benefits you can enjoy from it. Of course, new windows mean an ROI of more than 75%. However, there are also many other advantages; let’s take a look at some of them:
Glass, insert or full frame: four ways to replace a window
Window replacement in Los Angeles comes in four depths. The right one depends on the condition of the frame and of the wall around it:
New glass in the old sash
For a cracked pane or a fogged double-pane unit in a frame that is still sound. California’s Energy Code counts new glass in an existing sash and frame as a repair, as long as it performs at least as well as the old glass.
Insert (retrofit) window
The new window is set inside the existing frame, so the stucco, siding and interior trim stay. The glass area gets a little smaller, which matters on a bedroom window that has to stay large enough for escape.
Full-frame replacement
The old window, casing and trim come out down to the rough opening. It is the choice for rotted frames, water damage around the window or a new size, because the opening itself can be repaired and the new window sealed into the wall.
A new or larger opening
Cutting in a new window or a patio door adds glass to the house, so the Energy Code’s limits on total and west-facing window area apply; additions of 16 square feet or less are exempt from those area limits.
Windows & Doors
If you want to give your home a fresh feel, while brightening the ambience, new windows and doors are a great way to do it. We can work with all kinds of windows, including:
Sliding windows
Arched windows
Single or double-hung windows
Bay windows
Casement windows
Awning windows
Garden Window
Egress windows
Bow windows
Glass block window
Hopper windows
Skylight windows
Doors and Windows
When it comes to windows and doors for your home, proper, professional installation is everything and will save you money in the long run.
When you choose to work with us, one of our dedicated sales representatives will help you choose brand new windows and doors to lighten and brighten your space, add a touch of elegance, or create safety and functionality for your growing family. We will take care of all the details from deciding to ordering to installation and whatever comes in between.
Get fresh air every day
Allow in Mother Nature’s fresh air and bounty, without having to worry about not being able to close your windows or getting them stuck.
Durable
The products we choose combined with the high caliber of our workmanship create lasting designs and exquisite functionality.
Money saver
Save hundreds, if not thousands of dollars on heating and cooling your home. You can also raise the value of your property.
Multiple designs
Our designers will present you with multiple designs that you can choose from to create the natural light you want.
Title 24 rules for replacement windows in Los Angeles
Every replacement window has to meet two ratings set by California’s 2025 Energy Code (Title 24, Part 6, Section 150.2(b)1B and Table 150.1-A). The U-factor measures how much heat passes through the whole window; lower is better. The solar heat gain coefficient (SHGC) measures how much of the sun’s heat gets in; lower keeps rooms cooler. Both are printed on the window’s NFRC rating label. The limits follow the climate zone of your ZIP code:
Zones 6, 8 and 9: Los Angeles from the coast to the San Fernando Valley
U-factor 0.30 or lower and SHGC 0.23 or lower.
Zone 14: Lancaster and Palmdale
U-factor 0.27 or lower and SHGC 0.23 or lower.
Small jobs: 75 square feet of windows or less
U-factor 0.40 or lower and SHGC 0.35 or lower are enough.
Skylights
A replaced skylight needs a U-factor of 0.40 or lower and an SHGC of 0.30 or lower.
Not sure of your zone? The Energy Commission’s climate zone search tool shows it for any address. A low SHGC also takes load off the air conditioning on west and south walls; for the rest of the house, see insulation and HVAC.
Frame materials
ENERGY STAR certified windows come in several frames. Vinyl and fiberglass need little upkeep and insulate well. Aluminum is durable; look for a thermal break that stops heat moving through the metal. Wood insulates well and suits historic homes, and an aluminum or vinyl cladding outside cuts the upkeep. Composite and combination frames mix materials for strength and insulation.
Check Out Some Of Our Latest Projects
Bedroom windows must stay escape windows
Under the 2025 California Residential Code (Section R319), every sleeping room needs at least one operable emergency escape and rescue opening:
- a net clear opening of at least 5.7 square feet, or 5 square feet on the ground floor
- at least 24 inches high and 20 inches wide when open
- the bottom of the opening no more than 44 inches above the floor
A replacement window in an existing escape opening is exempt from those sizes when it is the manufacturer’s largest standard size that fits the existing frame or rough opening, and it keeps the same operating style or one that opens as wide or wider, unless the work is part of a change of occupancy (such as turning a garage into living space). So a change of style, or an insert that shrinks the opening, has to be checked on bedroom windows.
Where safety glass is required
The code calls these hazardous locations, and the glass in them must be safety glazing:
Glass in doors
Fixed and operable panels of swinging, sliding and bifold doors, patio doors included.
Glass next to a door
A pane within 24 inches of either side of a closed door with its bottom edge less than 60 inches above the floor.
Large, low windows
A pane over 9 square feet with its bottom edge under 18 inches and its top edge over 36 inches above the floor, near a walking surface.
Door replacement in Los Angeles
Door replacement covers entry doors, sliding patio doors and French doors. Glass in a door is a hazardous location under the code, so it has to be safety glazing. When a project adds exterior door area, a solid swinging door has to meet the Energy Code’s door U-factor of 0.20, while glass patio and French doors count as windows and follow the window ratings above. As with windows, the old door, frame and trim can come out and the opening be repaired before the new door goes in.
What sets the price: the openings
How many windows and doors, their sizes, and whether any opening is new or enlarged.
Insert or full frame
An insert keeps the old frame; a full-frame replacement adds removal, repair of the opening and new trim, stucco or siding patches.
The product
Frame material, style (sliding, casement, bay, bow and others) and the ratings your climate zone requires.
Paint and finish
Trim, molding, insulation around the frame and the final coat of paint.
We apply for all the permits your home improvement project requires well before construction. Within 24-48 hours of your call, one of our team members will visit your home to scope out your space and help you decide how you want your space to work. Windows can be part of a larger home remodel, and the work can be paid through our financing partners.
How does it work?
The Maingreen Remodel & Construction Windows & Doors Installation
Step 1 – To start, one of our expert consultants will conduct a site visit to your home to do a full assessment of your home’s window and door situation. The process can then include the removal of old windows, casing and trim, the repair of old window openings, and/or carving out new one (s).
Step 2 – From there it’s the fun part…did someone say window shopping?! Our experts will help you choose your new windows for the perfect fit.
Step 3 – Then comes installation and the addition of any insulation, extensions or trim molding.
Step 4 – Applying a fresh and inviting coat of paint is the final step.
Step 5 – (happens throughout!) – Our experts will make sure you are happy and informed every step of the way.
Rest Assured. Working with us is a GREAT decision.
With hundreds of happy customers, we know you will be satisfied with our work, our friendliness and our attention to detail. We are dedicated to making your dream home remodel a positive experience.
FREE CONSULTATIONS
We offer free energy efficient consultations with one of our certified experts. We come to you at your earliest convenience.
HONESTY
We value honesty in life and business.
LICENSED
Maingreen Remodel & Construction is licensed and insured.
PROTECTION
With rising energy costs, we can help you protect your spending and increase the value of your home.
TRANSPARENCY
We work with you every step of the way. We provide clear outlines on the scope of work necessary to meet your dream.
