Best Way to Clean Exterior of House Before Painting
Like most pigment jobs, the key to a long-lasting exterior pigment job is proper training. Before you lot can start slapping new pigment on your house's exterior walls, you've got to clean them thoroughly.
Exterior paint can last 15 years or more than – providing you properly clean and prep earlier applying pigment. If yous skip this footstep and paint over dirty surfaces, you'll end up with a poor-looking result that won't last.
So, how do you clean the exterior walls and siding before painting? Should you apply a pressure washer? Or some type of cleaning chemical?
I'll interruption downwards everything you need to know to clean your exterior walls before painting.
Why do you need to make clean exterior walls before painting?
You might exist tempted to skip cleaning exterior walls before cleaning, after all, it's a muddy job, and won't the new paint cover upwardly the sometime dirt and grime?
Well, yes information technology will cover it upward temporarily, merely 6 months from at present you lot'll exist dealing with chipping, cracking paint, and be back to square i.
Removing dirt, grime, mold, and mildew from your house's siding will result in a clean surface for the new paint to adhere to. Paint adheres best to clean, dry, and sanded surfaces, so you'll want to ensure the siding dries for several days after cleaning.
Also, go along in mind the best fourth dimension to make clean exterior walls is during the warmer summer months. You desire the siding to dry out quickly, and avoid moisture getting trapped between the siding. During winter, you can run into bug with water freezing or not evaporating rapidly enough.
How to wash a firm before painting?
Ok, and then how should you wash the exterior of your house earlier painting?
At that place are essentially ii different ways to do this: scrub and launder information technology past hand, or by using a force per unit area washer. We'll take a look at both methods in detail, and explain the pros and cons of both.
Method ane: Manus Cleaning
Hand cleaning is exactly what it sounds similar. Scrubbing and washing the exterior with some good former fashioned elbow grease.
Hand cleaning is more labor-intensive than the culling, but it has less potential to damage the business firm and results in a better finished product. Yous'll need to get up on a ladder to exercise this properly, and then make sure you've got a quality ladder, and are comfortable using it safely.
Tools & Materials Needed
- Ladder
- Scrub brush
- Rags
- Garden hose with spray nozzle
- Mold/Mildew cleaner like 30 Seconds
Below is a step-past-footstep guide to cleaning a business firm's exterior. It's all-time to work in sections, rather than doing the entire house at in one case.
Footstep i: Assess Exterior Condition
The get-go thing to exercise is to assess the status of the exterior. If your siding hasn't been cleaned or painted in decades, you'll need to do a more thorough cleaning than a recently painted house. Check for chipped and corking paint, cracks or gaps in the siding, and mildew/mold/algae. Pay close attention to the north side of the house, as the shade and damp provide ideal conditions for mildew to abound.
If your paint is old and chipping, be careful when hosing it downward. This old chipped paint will need to be removed before repainting, but chipped and cracking pigment tin be a sign of more than serious harm beneath. Likewise, have a await at the status of the paint effectually the window frames and trim.
Pace 2: Scrub/Brush Away Clay
Use a large castor to remove any loose dirt and debris fastened to the firm siding. There's no need to get crazy here, as you're going to launder the outside walls afterward.
After you've brushed abroad any large pieces of clay, use the hose to spray down the siding. Take intendance not to spray upwards into gaps in the siding, every bit this tin can cause moisture to collect within the walls.
Footstep 3: Use Chemical Cleaner
Spray downwards the entire wall with a mold/mildew cleaner for xxx seconds. These bleach-based cleaners are specifically formulated for this task, and are incredibly effective and removing dirt, grime, and mildew.
1 thing to keep in mind when using these cleaners is to clothing one-time clothes you don't mind ruining. The cleaner is bound to get on your apparel, so don't article of clothing anything you want to keep pristine.
Pace iv: Rinse Clean
Let the spray soak into the outside equally per the manufacturer'southward directions. Then spray down the siding and picket the dirt and grime melt away!
Later on this process is completed, you might find stubborn spots that weren't completely removed in the first pass. Spray these areas again, and work the cleaner into the siding with a rag. Then rinse make clean with the hose.
Finish the exterior off with a last hose down, and and so let information technology dry for at least 48 hours before applying paint.
Method 2: Pressure Washer
Tools & Materials:
- Pressure washer
- Wand extension (optional)
- Drop cloths
- Scaffold or ladder
Renting or ownership a pressure washer to make clean outside walls can make the job less labor-intensive, but you'll need to take intendance not to cause accidental damage to your walls.
A pressure level washer can put out 2500 to 3500+ PSI of force per unit area, which is far more than than the typical 40 to 80 PSI plant in a garden hose. This massive amount of water pressure makes pressure level washers fantastic at cleaning driveways, sidewalks, fences, and vehicles, but a picayune overkill for houses with wood siding.
If your house has vinyl or brick siding, and then damage from the force per unit area washer is less of a business. If the siding is forest, yous'll need to be cautious about spraying in-between gaps and around windows/vents.
When pressure washing, you lot'll desire to article of clothing solid center-protection, avoid making contact with the jet, and never spray from a ladder. Also, if your firm was built earlier 1978, make sure to cheque for lead pigment before starting.
To pressure launder a house before painting:
- Embrace up shrubs, gardens, and other sensitive vegetation earlier starting. Close and seal whatsoever windows, doors, and calorie-free fixtures.
- If you've got mildew to deal with, use a cleaner with mildewcide to thoroughly soak the siding earlier pressure washing. This volition remove most of the mildew, thus requiring less pressure later on on.
- Power up the force per unit area washer, and starting from the height of the firm piece of work your way downwards. If you've got a two-story firm, a wand extension will exist necessary. You may also want to use a moveable scaffold if you've got a lot of square footage to make clean.
- Bending the sprayer downwards every bit you work your mode around the business firm. This accomplishes two things. Offset, it prevents water from getting underneath the siding and inside the walls, and secondly, information technology's easier to continue the nozzle nether control.
Source: https://homeimprovementscout.com/how-to-clean-exterior-walls-before-painting/
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