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    A Step-by-Step Guide to Window Replacement in Stucco and Brick Walls

    Mar 31, 2025

    Mar 31, 2025

    6 min read

    67

    When it comes to home renovations, swapping out old windows is usually high on any homeowner’s to-do list. However, even the most seasoned DIYers find stucco and brick walls surprisingly tough opponents. While durable and visually pleasing, these materials are prone to cracking and can transform a simple window replacement into a challenge.

    In this quick guide, we’ll walk you through how to replace a window in stucco or brick wall, discuss best tips and tricks on minimising damage and avoiding common pitfalls, and provide a cost breakdown of DIY and professional installation.

    Mini-Guide to Window Replacement in Stucco or Brick Wall

    Full frame window replacement in stucco or brick walls is a multi-step process that requires precise measuring and careful prepping. A methodical approach without rushing through any steps is one of the best ways to prevent unnecessary setbacks. 

    Prepping: Tools, Materials, Setup

    First things first, you must gather a toolkit of essentials. Here’s what you’ll need:

    • Tools: measuring tape, level, masonry saw, hammer, pry bar, chisel, caulking gun, multi-tool or angle grinder, utility knife, and safety gear (gloves, goggles, dust mask)
    • Materials: flashing tape, exterior-grade caulk, masonry anchors, shims, stucco patch or mortar mix, expanding foam insulation, waterproof sealant, and of course, the new window.

    Before rushing into action, prep your workspace. Move furniture and decor away and cover the surrounding area with a drop cloth. Before replacing windows in stucco wall, tape plastic sheeting around the window to catch the dust and debris — there will be a lot of it. In contrast, to replace window in brick wall, make sure that your ladder or scaffolding is solid — uneven surfaces can transform the work into a complicated mess. 

    Step 1: Remove the Old Window

    With the tools and materials organized, it’s action time! How to replace windows in stucco or brick without causing damage? Start by slicing around the trim with a utility knife to break the caulk. For stucco, ease the masonry saw along the edges — go slow and steady to avoid cracking it. For brick, tap a hammer and chisel to wiggle the frame free without dislodging the mortar. Next, gently pry the frame out with a pry bar. 

    Step 2: Prep the Opening

    With the old window out of the way, it’s time to put your measuring tape to use. Measure the rough opening — width, height, depth. Take note of any obstructions. Next, clear the opening of debris and old caulk. Before replacing windows in stucco walls, use a grinder to smooth the edges if they’re rough. In contrast, if you’re working with brick walls, check for uneven bricks and level them with mortar.

    Step 3: Installing Replacement Windows in Stucco and Brick

    Whether you plan to replace window in stucco wall or a brick one, experts recommend opting for a full-frame window replacement for maximum durability. The method is thorough and involves removing the existing window with frame, sash, trim, and even the surrounding wall structure. 

    Now, for the fun part — pop the new window in the opening using shims to keep it straight. Next, secure it with screws into the wall, but be careful to avoid overtightening as it can crack stucco or brick in no time. Apply flashing tape around the frame to block water and seal it with waterproof caulk. 

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    Step 4: Finishing Off

    A window should elevate the room — not raise eyebrows. If you don’t want your installation to look like a DIY project gone wrong, you need to patch the surrounding areas: for stucco, use blend matching stucco mix with trowel for extra durability. Brick walls require a matching-colour mortar; fill in any uneven places and smooth it out. 

    Tips and Tricks to Avoid Damage to Stucco or Brick

    Stucco and brick walls are challenging to work with due to their brittleness. How to replace a window in a stucco house or brick structure without damaging the walls?

    • First, don’t rush it — a methodical and careful approach works best here.
    • Second, use a masonry saw instead of a standard blade to ensure structural integrity.

    If you’re working with large windows, support the wall with temporary bracing. In case any stucco or brick is chipped, don’t fret — you can repair it with patch kits or mortar.

    DIY vs. Professional Installation: Cost Breakdown

    Replacing windows depends on the window type, size, customization, and installation method. Standard vinyl windows cost around $500 to $1,000 each. At Ecoline, we have the installation already included when you shop for new windows, and if you want to get an approximate price range, don’t hesitate to use our cost estimator online to get a FREE quote in seconds.

    If you decide to go full DIY, you’ll save money on professional installation (which can add up $400 to $900 per unit).

    Keep in mind that if you don’t have the necessary tools, there are additional expenses (for instance, a masonry saw can cost around $150-$400).

    How to install replacement windows in stucco or brick without fail?

    Cracking stucco or brick is a common pitfall. It’s best to measure everything twice, cut carefully, and check the level throughout the entire process.

    What if I still managed to damage the wall?

    It depends on the scale of the wall damage. In the majority of cases, it’s easy to solve by filling the stucco crack with caulk or patching compound. For uneven brick, use mortar and grind down high spots.

    When is it time to call a pro?

    It’s best to call specialists if you’re dealing with huge windows or tall houses or if you’re completely clueless about masonry. You can also call the pros for certain tasks you’re unsure about, like cutting stucco or brick.

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