Everything You’ll Need
| Tool/Material | Carpet Tile | Stretch-In | Glue-Down | Purpose |
|---|---|---|---|---|
| Utility Knife | ✔ | ✔ | ✔ | Cut carpet/padding |
| Tape Measure | ✔ | ✔ | ✔ | Measure dimensions |
| Straight Edge | ✔ | ✔ | ✔ | Guide straight cuts |
| Chalk Line | ✔ | ✔ | ✔ | Mark layout lines |
| Pry Bar | ✔ | ✔ | ✔ | Remove baseboards/flooring |
| Knee Pads | ✔ | ✔ | ✔ | Protect knees |
| Tack Strips | ❌ | ✔ | Optional | Secure carpet edges |
| Double-Sided Tape | ✔ | ❌ | ❌ | Adhere carpet tiles |
| Carpet Adhesive | Optional | ❌ | ✔ | Glue carpet |
| Staple Gun | ❌ | ✔ | ✔ | Secure underlay (wood only) |
| Seaming Tape & Iron | ✔ | ✔ | ✔ | Join seams |
| Knee Kicker | ❌ | ✔ | ❌ | Stretch carpet |
| Power Stretcher | ❌ | ✔ | ❌ | Stretch carpet |
| Stair Tool | ✔ | ✔ | ✔ | Tuck carpet edges |
| Carpet Roller | ✔ | Optional | ✔ | Press carpet firmly |
For concrete floors: cement filler, construction adhesive, masonry nails.
Quick Notes:
- Carpet tiles usually need tape or adhesive dots and don’t need stretching.
- Stretch-in carpet needs a knee kicker and power stretcher.
- Glue-down carpet skips the stretcher but needs adhesive and a roller to keep it in place.
Step 1: Removing Old Flooring
Before putting in new carpet, take out any old flooring. Whether it’s your old carpet, hardwood, or tile, make sure to remove it all. This gives a clean surface for your new carpet to stick to.
Step 2: Subfloor Preparation
After taking out the old flooring, clean and get the subfloor ready. Check for any damage or moisture problems. If putting carpet over concrete, look for moisture and fix any issues before you continue.
Fixing Damage and Uneven Areas
Find any cracks, holes, or gaps that need fixing. For a wooden subfloor, use wood filler for gaps or cracks, then sand it smooth once dry.
Use a cement-based filler for cracks in concrete subfloors. Also, look for high or low spots. Use a leveling compound to make these areas even, so the surface is flat and smooth.
Fixing these problems helps avoid future issues in uneven spots.
Checking for Moisture
Look for moisture in the subfloor, especially with concrete. Too much moisture can cause mold, mildew, and damage to both the subfloor and the carpet.
Use a moisture meter to check moisture levels. If they’re too high, fix the problem before moving on.
This might mean using a moisture barrier or sealant to keep the subfloor dry. Checking and fixing moisture levels helps avoid problems and ensures the carpet lasts a long time.
Step 3: Measuring the Room
Before buying your carpet, measure the room’s size correctly. Check both the length and width, and remember any alcoves or odd shapes in the room.
Add about 4 inches to your length and width to allow for wall changes and cutting when fitting the carpet.
Handling Odd Shapes
These odd shapes can make installation tricky and change how your carpet looks. Here are some common ones you might find:
Alcoves and Bay Windows
Alcoves and bay windows create different shapes and angles that change a room’s normal rectangle shape. These spots need exact measurements and extra carpet pieces for full coverage.
Closets and Doorways
Closets, especially walk-ins, and doorways can interrupt the main carpet area. Doorways need special transitions between floor types, and closets might need smaller, custom carpet pieces.
Angled Walls and Corners
Not all rooms have straight walls. Angled walls and corners make cutting and fitting the carpet harder. They need careful work to fit the carpet against the edges snugly.
Columns and Built-In Features
Columns or built-in items like shelves, cabinets, or fireplaces can block carpet installation. These need precise cutting and fitting around their base for a smooth look.
Irregular Room Shapes
Rooms with L-shaped or T-shaped layouts have extra challenges. These shapes need a more complex way to measure and cut the carpet to fit the whole space.
Steps and Staircases
If your room has steps or stairs, it gets more complex. Each step must be measured and carpeted separately for a snug fit and smooth change between steps and the main floor.
Nooks and Crannies
Small nooks, crannies, and recesses can be easy to miss but are important. They must be included in your measurements and may need custom-cut carpet pieces to cover them well.
Step 4: Calculating Square Footage
After measuring, find the room’s square footage by multiplying the length and width. This shows how much carpet to buy.
For example, if the room is 10 by 20 ft, multiply 10 by 20 to get 200 sq ft.
Step 5: Installing Tack Strips
Tack strips keep the carpet edges on the floor. They have small nails that grip the carpet to hold it.
Tack Strips on Wood
To put tack strips on a wood floor, nail them down with a hammer or nail gun. Make sure they are spaced evenly around the room, leaving a space between the strip and the wall.
Tack Strips on Concrete
Putting tack strips on concrete needs a different method.
First, put construction glue on the back of the tack strip and press it on the floor. Then, nail it down with masonry nails.
Step 6: Choosing and securing the Right Underlay
The carpet pad, or underlay, gives extra cushioning and insulation for your carpet. Lay the underlay across the direction you will lay the carpet.
Types of Underlay
There are different types of underlay, each offering unique comfort and support:
Foam Underlay
Foam underlay is popular because it is light and affordable. It provides soft cushioning and absorbs impact, making it great for busy areas.
Rubber Underlay
Rubber underlay is very durable and strong. It supports the carpet well and reduces noise between floors, perfect for multi-level homes.
Felt Underlay
Felt underlay is known for a soft feel and sound absorption. Made from compressed fibers, it offers plush cushioning and a quieter living space.
Secure the Underlay
Use a staple gun to secure the underlay flat. Overlap the edges to prevent gaps or seams from showing through the carpet.
Factors to Consider when Choosing Underlayment
| Aspect | Consideration |
|---|---|
| Carpet Type | Different carpets may need different underlay for best results. |
| Level of Foot Traffic | For busy areas, pick a denser underlay that can handle constant use. |
| Noise Reduction | Choose underlay like rubber or felt for sound absorption to reduce noise between floors. |
| Special Requirements | If using underfloor heating, pick an underlay with good thermal insulation for energy efficiency. |
Step 7: Cutting the Carpet
Cutting the Carpet
Before you put down your carpet, make sure it fits the room right. Cutting it right is important for it to look good. Here’s how to do it:
Measuring and Marking
- Start by rolling out the carpet in the room where you want it.
- Leave a few extra inches by the walls to trim later.
- Use chalk or a pencil to mark the back of the carpet. These marks will guide your cuts.
Techniques
- Straight cuts: Use a utility knife and a straightedge to cut along the marked lines on the back. Press firmly to get a clean cut.
- Corner cuts: For corners, make diagonal cuts from the room’s corner to make a smooth transition between walls.
- Trimming excess: After cutting the main parts, trim the extra edges with a utility knife for a neat finish.
Extra Tips
- Check your measurements twice before cutting to avoid mistakes.
- Cutting carpet needs care and time, so don’t rush.
- Change dull knife blades often for clean cuts.
- Always cut away from your body and keep fingers away from the blade for safety.
Step 8: Stretching the Carpet
Stretching the Carpet
Use a knee kicker and carpet stretcher to make the carpet fit tightly across the room. Begin in the middle and move toward the edges, using the knee kicker to attach the carpet to the tack strips.
Installing a Door Bar
After the carpet is set, put a door bar at doorways or thresholds. This gives a smooth change between rooms and keeps the carpet secure.
Step 9: Seaming Carpet
Seaming Carpet
Seams should be tight, flat, and hidden. Here are some easy tips for carpet seams:
- Use a knee kicker to push the carpet into the edges and seams. Start in the middle and work out to the walls.
- Put seam sealer on the edges before joining them. This stops unraveling.
- Use a seam roller to press the seam firmly. Roll from the middle out to the edges.
- Try to avoid seams in busy areas. If you can’t, make sure they go across the main traffic path.
DIY vs. Professional Carpet Installation
Before starting your project, think about doing it yourself or getting a professional.
| Option | Pros | Cons |
|---|---|---|
| DIY Installation | – Costs less at first – Flexible timing – Feel proud of your work | – Needs special tools – Hard to learn – Mistakes can be pricey |
| Professional Installation | – Perfect results – Quick and easy – Often comes with warranty | – Costs more – Less flexible with timing |
DIY is best if:
- You’re installing carpet tiles or in small spaces.
- You have or can rent the right tools.
- You’re okay with measuring, cutting, and stretching carpet.
Hire a pro if:
- The area is big or oddly shaped.
- You’re using stretch-in or glue-down carpet.
- You want results that last.
✅ Tip: Even if you DIY, think about hiring a pro for tricky parts like stairs.
Need help with carpet installation?
Our flooring installation team can do it all — from prepping the floor to perfect carpet fitting. You can request a free estimate today and let us make it easy!
Common mistakes to avoid when installing carpet
Avoid common mistakes like not preparing seams well, which can cause visible lines or gaps in your carpet. Take your time and do each installation step right.
- Not preparing seams well: Can cause visible lines or gaps. Always align and secure seams properly.
- Skipping subfloor cleaning and leveling: Leads to uneven surfaces. Ensure the subfloor is clean, dry, and smooth.
- Wrong measurements: Might cause buying too much or too little carpet. Double-check your sizes and account for irregularities.
- Wrong underlay choice: Can reduce durability and comfort. Choose one that fits the carpet and room type.
- Improper tack strip placement: Can cause loose edges and shifting carpet. Make sure tack strips are secure around the perimeter.
- Not stretching the carpet: Skipping a knee kicker or power stretcher can cause wrinkles. Always stretch for a snug fit.
- Ignoring room conditions: High humidity or temperature changes can cause expansion or contraction. Prepare the room first.
- No expansion gap at walls: Can lead to buckling. Leave a small gap between the carpet and walls for expansion.
We offer financing options, and customers can visit our showroom/store.
Do You Need Help With Your Carpet Installation Project?
Now that you’ve learned how to install carpet flooring, you’re ready to make a warm and cozy space. But if you’d prefer leaving the work to experts, we’re here for you.
Our flooring installation team handles everything — from preparing the subfloor to stretching and seaming carpets perfectly — so you can relax and enjoy the results. We’ll also help you pick the best carpet style and padding for your home and budget. For more on pricing, check out our Carpet Flooring Cost Guide to plan your project.
Contact us today to schedule your free in-home consultation and see if we serve your area.
