One of the best methods to increase the curb appeal of your house and defend your investment against the elements is by painting the exterior of your home. A question that has been raised by many homeowners, however, is, Is it necessary to know how many coats of exterior paint is needed? The answer to this question is: it depends- on the surface, paint quality, and the desired results.
This guide will break down the reasons why you should know how many coats of exterior paint you require, when you require a second coat, and some tips that will result in a durable and professional appearance.
Why the Number of Coats Matters
Knowing the appropriate number of coats is not only about appearance.
It also affects:
Durability: Additional coats will be able to protect against rough weather, UV rays, and moisture.
Richness of color: Multiple layers are required to give the color a smooth and intense appearance especially when bold or rich color is used.
Surface coverage: It is important in order to cover old paint, stains, or bare surface.
We shall wade into the variables that influence the number of coats of exterior paint required.
Key Factors That Affect How Many Coats You Need
Surface Material
The paint shows up on various surfaces differently.
Wood: Wood should always be coated at least twice.
Stucco: This is porous and rough, which needs two or more coats to be completely covered.
Vinyl siding: This material is easy to work with as it is already painted, and painting with a single coat is fine, provided it is properly prepared.
Brick or masonry: Must have additional coats when untouched; paint can percolate into the surface.
Metal: This is normally required to have a primer together with one to two top coats.
Color Change (Light to Dark or Vice Versa)
Are you changing from light color to dark, or vice versa?
Dark to light: May require 2-3 coats, or tinted primer to avoid bleed-through.
Light to dark: Can only be made richly and evenly after two layers.
Same color recoats: Recoat can be applied once, if it’s a good surface.
Type and Quality of Paint
Better quality paints are heavily pigmented and cover well.
Premium paints: Can be sprayed with fewer coats, just one in fact, when there is a good primer.
Economy paints: Economy paints normally take two or more coats to be completely covered.
Self-priming paints: This may require two coats on porous or uneven surfaces.
Primer Usage
Primer will prepare the surface and enhance attachment of the paint.
When you use primer:
On bare surfaces: It is necessary to use a primer and at least two topcoats of paint.
Where the painted surface is in good condition: Painter may not require a primer.
Tinted primers: Assist in the reduction of the coats in making dramatic color changes.
General Guidelines by Surface Type
The approximate number of coats that you will probably need is as follows:
| Surface Type | Primer Needed? | Recommended Coats |
| Bare Wood | Yes | 1 primer + 2 coats |
| Previously Painted Wood | Optional (if in good shape) | 1–2 coats |
| Stucco | Yes | 1 primer + 2–3 coats |
| Vinyl Siding | Sometimes | 1–2 coats |
| Brick or Masonry | Yes | 1 primer + 2 coats |
| Aluminium/Metal Siding | Yes | 1 primer + 2 coats |
When One Coat Might Be Enough
You may only need one coat if:
- You are applying the same paint
- The former paint is in good condition
- The paint you are working with is quality heavy paint meant to be used for one coat
- You are dealing with vinyl or any other siding that is non-porous
Remember, even in these instances, a second coating is likely to add increase the finish of the job.
When You Definitely Need Two Coats (or More)
You will want to put on no fewer than two coats when:
- You are decorating a porous wood, stucco, or masonry
- The surface has not been painted previously
- You are switching colors drastically
- You must work with flaking, scaly, or rough old paint
- You are applying a lower quality or thinner paint
Tips for Applying Exterior Paint Properly
Prep the Surface Well
The secret of lessening the number of coats is in proper prep.
- Wipe down (use pressure wash, as necessary)
- Scrape off old, peeling paint
- Repair cracks and holes
- Sand rough areas
- Prime as necessary
Use Quality Tools and Materials
- Spend more on quality paint and use a little less paint to get better coverage.
- Apply even brush strokes or with rollers that are used outdoors
- Painting should not be done under direct sunlight and in extreme temperatures
Don’t Skip Drying Time
- Allow paint and primer to dry between layers
- Do as the manufacturer directs–usually it is 4 to 6 hours between coats (depending on the weather)
How Long Should Exterior Paint Last?
With proper preparation and two coats of good paint:
Wood siding: 5-7 years
Stucco: 7-10 years
Vinyl siding: 8-10 years (it might fade, however)
Brick (painted): 10+ years
Two coats will be more expensive initially but will save you money and time in the long run, as you will have been able to prolong the lifespan of your paint job.
Professional vs. DIY Painting
When it comes to doing the project yourself, you should use at least two coats and a primer. Most professional painters use two coats as a general rule, and they will determine whether or not additional coats are necessary depending on the condition and surface of your home.
Hiring a pro can ensure:
- Proper prep work
- Using correct number of coats
- Reduced time of completion with quality output
