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Let us share some paint coating basics that will save you time, money, and frustration before you pick up that paintbrush. Our team at Revive Painting & Wallcovering has watched many DIY projects go wrong because homeowners didn't know how many coats they needed. Here's everything you should know about this common confusion. When one coat might be enough People often ask us if they can get away with just one coat. The answer is yes – but only in specific situations. One coat might be enough if you're painting over a surface that has the same color and sheen, especially with existing paint in excellent condition. This works best in spare bedrooms or hallways where you don't need much durability. High-quality paints with premium formulations can sometimes give you good coverage in a single coat, especially with products that have higher solids content. You might also get by with one application for small touch-ups and quick cosmetic refreshes, but only with the exact same batch and color. Notwithstanding that manufacturers claim "one-coat coverage," these claims rarely work in real-life applications. You might save some money upfront with one coat, but it usually disappoints in its final appearance and costs more because you'll need to repaint sooner. Why two coats is the standard The science behind two-coat standard makes perfect sense to professionals like me. Your first coat builds the foundation – it seals surface pores, evens out texture, and starts the color transition. The second coat gives you accurate color and uniform sheen while covering roller marks and subtle streaks that show up under angled light. Two paint coats create a protective film that handles cleaning, scrubbing, and humidity exposure well. This becomes vital in your kitchen's and bathroom's high-use areas. Paint manufacturers design their products to reach a specific dry film thickness between 3 and 4 mils for homes, and a single coat usually gives you just half that thickness. Two properly applied thinner coats will always look better than one heavy application. Heavy paint application to get one-coat coverage often causes sagging, takes longer to dry, and cures poorly. Even premium "one-coat" products like Behr Marquee or Sherwin-Williams Emerald need two coats to honor their warranties. Your second coat builds up the film strength and improves durability and washability by a lot. This fuller film protects against moisture, ultraviolet damage, and scratches, giving you a longer-lasting paint job and better value over time. How color changes affect coverage Color changes affect the number of coats you'll need. Light colors over dark surfaces typically need more coats for complete coverage – sometimes three or more. The difference between your current color and desired shade plays a big role. Bright reds, oranges, and yellows create unique challenges because they use translucent organic pigments with poor opacity naturally. Even the best paints might need three or more coats to get these colors right. Benjamin Moore suggests using tinted primers for these colors to reduce the finish coats needed. Whites and light colors need special attention too. These colors reflect light and show every flaw, making two uniform coats essential for consistency and a smoother finish, especially under bright lights. A tinted primer can help reduce topcoats needed for dramatic color changes – gray-tinted primer works great when going from light to dark colors. My experience with clients in Saskatoon shows that knowing these basics saves both time and money while giving results that last. The number of coats you choose affects more than just looks—it determines protection, lifespan, and overall maintenance costs. Prepare the Surface for Better Coverage The perfect paint job starts well before you pick up your first brush. Our team at Revive Painting & Wallcovering in Saskatoon has learned that proper surface preparation determines the number of paint coats you'll need. Quality paint can't fix poorly prepared walls. Check wall condition and texture Getting a full picture of your walls is vital. Look at the whole surface to spot cracks, peeling paint, or uneven textures that could ruin your final result. Fresh paint won't hide these flaws—they'll stand out even more once you add color. You'll need to scrape away loose material from cracks or peeling spots, add spackle, then sand until everything's smooth. This detailed prep work might feel slow, but it cuts down the number of paint coats you'll need to achieve a flawless finish. Clean walls let paint stick properly. People often skip this step and end up needing extra coats because the paint won't bond well. Start by dusting with a clean towel or hoovering up loose debris with a brush attachment. Next, use a gentle cleaning solution—mix some baking soda and vinegar or mild dishwashing liquid for most surfaces. Kitchen walls or greasy areas might just need a stronger detergent. Mildew needs immediate attention—don't try to paint over it. The mildew will grow right through new paint layers and create bigger headaches down the road. Mix three to four parts water with one part bleach, put on protective gear, and tackle that mildew before painting. How many coats of primer on new drywall New drywall creates special challenges that affect your paint coat count. Drywall soaks up paint like a sponge, which leads to patchy coverage and wasted paint. Professional painters recommend at least two coats of latex primer on new drywall. This method creates an even base that seals the surface and stops the topcoat from soaking in unevenly. Primer does more than help paint stick—it builds a consistent foundation so your paint color looks true while using fewer topcoats. Drywall mud joints absolutely need primer to prevent "flashing"—those annoying shiny spots in your final paint job. Primer costs nowhere near as much as quality paint per gallon, making it an economical step that saves money over time. When to use primer and when to skip it Not every paint job needs primer, despite what DIY guides might say. Walls in great shape with a similar or lighter color might work fine with high-quality self-priming paint. All the same, primer can boost durability and give you an even sheen. Some situations just need primer: Bare surfaces like new drywall, wood, or metal Big color changes, especially going from dark to light Walls with water damage, smoke, or grease stains Patched or fixed areas Glossy or oil-painted surfaces Primer becomes your best friend during dramatic color changes. The sort of thing I love about tinted primer is how it cuts down topcoat needs when switching between dark and light colors. Without it, old colors can play tricks—like blue walls under yellow paint creating an unexpected green tinge. Note that primer does more than help paint stick—it evens things out, blocks stains, and lets your paint color shine through properly. Well-primed surfaces usually need fewer coats of paint, which saves time and money on your project. Choose the Right Paint and Tools My 15 years as a professional painter at Revive Painting & Wallcovering taught me something valuable - your choice of paint and tools makes a huge difference in the number of coats needed. The right materials can turn a week-long project with multiple store runs into a simple weekend job. How much does a gallon of paint cover You need to know about paint coverage to plan your project properly. Most major manufacturers say one gallon covers 350-400 square feet in a single coat. These numbers change quite a bit based on several things. Premium paints give you better coverage than budget options. Cheaper paints might look like a good deal at first, but you'll need extra coats that wipe out any savings. The surface texture really changes how much paint you'll use. Rough surfaces like stucco need almost double the paint compared to smooth, primed drywall. We've seen this firsthand in our Saskatoon projects - fresh primed surfaces get close to that 400 square foot maximum, while unprimed walls only cover about 300-325 square feet per gallon. Artist-quality paints teach home painters a vital lesson - quality makes all the difference. Better products have more pigment and superior resins, so you need fewer coats. Student-grade paints might cost half as much but need three times more product to get the same results. That's why at Revive Painting & Wallcovering, we only use premium paints. They save our clients money by cutting down on labor and materials. Using a paint calculator to estimate quantity Paint calculators are a great way to get accurate estimates for both pros and DIY fans. You'll find free online calculators from Sherwin-Williams, Benjamin Moore, and Behr that give you spot-on estimates. These tools just need some simple measurements - each wall's length and width, plus how tall your ceilings are. The math is pretty simple if you want to do it yourself: multiply each wall's length by its height, then add everything together for your total square footage. Take a typical 12' x 14' room with 8' ceilings as an example: 2 x (12 x 8) + 2 x (14 x 8) = 416 square feet. After you get the total square footage, divide it by how much one gallon covers (usually 350-400 square feet) to figure out your paint needs. Our example room would need 416 ÷ 375 = 1.1 gallons per coat. Most quality paint jobs need two coats to look good and last long, so you'd need about 2.2 gallons total. I always tell people to add 10% extra for spills, touch-ups, and uneven spots. This buffer has saved many projects from annoying mid-job store runs. Looking at our 416 square foot room, you'd need roughly 2.4 gallons - so grab three gallons to be safe. Brush vs. roller: which gives better coverage The choice between brush and roller isn't just about coverage. Rollers handle big areas faster, but brushes work better in certain spots. A good brush gives you more control, uses less paint, and works better on textured surfaces than rollers do. A fully-loaded roller should cover about 9 square feet of wall. Rollers spread paint more evenly with fewer visible marks than brushes, which makes them perfect for large, flat areas. Brushes shine when you're working around trim, corners, and ceilings where you need precision more than speed. Your roller choice really matters for coverage quality. Smooth walls and glossy finishes work best with a 1/4-inch nap, while textured surfaces need 1/2 or 3/4-inch naps to fill all the gaps. High-quality microfiber roller covers hold and release more paint evenly, so you get smoother results and better coverage with fewer coats. Paint manufacturers might promise one-coat coverage, but my work at Revive Painting & Wallcovering shows that two thin coats always look better than one thick one. This stays true whether you're using a brush or roller. Going for one-coat coverage usually leads to thick, uneven paint that drips, sags, and takes forever to dry. Apply Paint the Right Way Your paint selection and surface preparation are done. Now the way you apply the paint will determine if you get professional results with fewer coats. We at Revive Painting & Wallcovering have mastered techniques that deliver smooth, streak-free finishes on walls throughout Saskatoon. How to paint a wall without streaks The quickest way to get streak-free walls depends on proper technique and paint application. Load your roller evenly—it should be saturated but not dripping. You need to apply paint generously. A time to reload comes when you're pressing hard on the roller to get paint on the wall. The "W" or "M" method works best for smooth results. Roll paint in this pattern first, then fill gaps with straight strokes. This approach prevents uneven distribution and creates consistent coverage. While cutting in edges, press your loaded brush firmly to apply a thicker layer about 1 to 1.5 inches from the border. Then lightly feather the paint to the edge. Don't overwork the paint since it starts drying right after application. Work in manageable 3-foot by 3-foot sections to spot touch-up areas before they dry. You can prevent roller lines by gently rolling back over visible trails in the opposite direction. How long between coats of paint Time between coats is vital for a durable finish. Latex paints need 2-4 hours before you apply a second coat. Oil-based paints take much longer—about 24 hours between applications. Rushing creates peeling paint, uneven color, or bubbling from trapped moisture. Weather conditions affect these timeframes significantly. High humidity makes drying periods longer. Each coat must dry completely until the color looks uniform across the surface. Tips for maintaining a wet edge A "wet edge" technique helps achieve seamless results. This means you need to apply new paint next to areas that haven't dried yet. Missing this step creates lap marks—visible lines where wet paint meets dried sections. You can maintain a wet edge by: Breaking walls into manageable sections Working quickly and methodically Planning breaks at natural interruptions like windows or corners Paint from "wet to dry" instead of the other way around for the best results. This method creates a smooth, uniform look without noticeable overlaps between sections. High-quality paints with better "wet edge" properties give you more time to work before drying starts, especially on large areas. Special Cases That May Need Extra Coats Some painting jobs just need extra attention and more coats whatever your prep work. My experience with Revive Painting & Wallcovering shows that standard two-coat applications don't always cut it. Painting over dark or bold colors Color changes from dark to light shades bring unique challenges. We painted over navy, charcoal, and burgundy to lighter neutrals and usually needed three or more coats for full coverage. Dark pigments tend to bleed through even quality paint, which leads to patchy and uneven results. You can cut down on topcoats by using tinted primers made for color transitions. A gray-tinted primer works better than pure white for bold colors. Textured or porous surfaces Texture makes paint consumption go up faster. You'll need extra coats on rough surfaces like unsealed concrete, textured drywall, and bare wood because they soak up paint quickly. Start by cleaning textured walls really well - vacuum first, then use TSP cleaner. Longer nap rollers (3/4" to 1½") work best since their fibers reach deep into textures and give better coverage. Seal porous materials with 2-3 coats of sealant or use a mist coat - paint mixed with 5-10% water - before painting. Ceilings, trims, and high-traffic areas Ceilings can be tricky, especially with stains or bare surfaces. You'll want stain-blocking primers for water marks or smoke damage. High-traffic spots need extra coats to last longer - two coats will give you a strong barrier against moisture, wear, and scrapes. These extra layers make cleaning easier and save money on maintenance. Need help? Let Revive Painting and Wallcovering handle your interior painting in Saskatoon. We know how to tackle challenging projects and deliver professional results without endless coats or poor coverage. Key Takeaways Understanding the right number of paint coats saves time, money, and ensures professional-quality results that last longer:  • Two coats is the professional standard - The first coat seals and evens texture, while the second delivers true color and durability • Surface preparation determines coat requirements - Clean, primed surfaces need fewer coats than unprepared walls with stains or damage • Color changes dramatically impact coverage needs - Dark to light transitions often require 3+ coats, while tinted primers reduce topcoat requirements • Quality paint and proper technique reduce coat count - Premium paints with higher solids content provide better coverage than budget alternatives • Special surfaces demand extra attention - Textured walls, ceilings with stains, and high-traffic areas typically need additional coats for optimal protection Investing in proper preparation, quality materials, and correct application techniques upfront prevents the frustration and expense of multiple repainting projects down the road.