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 subfloors: cement filler, construction adhesive, masonry nails.
Quick Notes:
- Carpet tiles often just need tape or adhesive dots and don’t require stretching.
- Stretch-in wall-to-wall carpet needs a knee kicker and power stretcher.
- Glue-down carpet skips the stretcher but requires adhesive and a roller to secure the bond.
Step 1: Removing Old Flooring
Before putting in your new carpet, you should take out any old flooring. Whether it’s an old carpet or any other type, make sure to remove it completely. This gives a fresh start for your new carpet to stick to.
Step 2: Subfloor Preparation
Once you remove the old flooring, clean and prepare the subfloor. Check for damage or moisture problems. When installing carpet on concrete, look for moisture signs and fix them first.
Repairing Damage and Uneven Areas
Find cracks, holes, or gaps to fill. For wooden subfloors, use wood filler for gaps, then sand the area smooth after it dries.
Use cement-based filler for cracks in concrete subfloors. Check for high or low spots and use a leveling compound to make the surface flat and smooth.
Fixing these issues prevents future wear and tear.
Checking for Moisture
Look for moisture in the subfloor, especially concrete ones. Too much moisture can cause mold and damage.
Use a moisture meter to check moisture levels. If high, address it before moving forward.
This might mean using a moisture barrier or sealant. Properly checking and fixing moisture issues ensures a long-lasting carpet installation.
Step 3: Measuring the Room
Before buying your carpet, measure the room’s size carefully. Check both the length and width, and don’t forget any nooks or unusual shapes.
Add about 4 extra inches to your measurements for wall and cutting differences when fitting the carpet.
Handling Odd Shapes
These odd shapes can make installing harder and change how your carpet looks. Here are some common issues you might find:
Alcoves and Bay Windows
Alcoves and bay windows can change a room’s usual shape. These spots need exact measurements and extra carpet pieces for full coverage.
Closets and Doorways
Closets, especially walk-ins, and doorways can break up the main carpet layout. Doorways need special transitions between floors, and closets may need small, custom carpet sections.
Angled Walls and Corners
Not all rooms have straight walls. Angled walls and corners make cutting and fitting the carpet tricky. Focus on these areas to make sure the carpet fits the edges well.
Columns and Built-In Features
Columns or built-in features like bookshelves or fireplaces can block carpet installation. These need precise cutting and fitting around their base for a smooth look.
Irregular Room Shapes
Rooms shaped like L or T need more careful measuring and cutting to fit the carpet right throughout.
Steps and Staircases
If your room has steps or a staircase, it adds complexity. Each step must be measured and carpeted individually for a snug fit and smooth step-to-floor transition.
Nooks and Crannies
Small nooks, crannies, and recesses can be easy to miss but are important. Include these in your measurements and use custom-cut carpet pieces to cover them properly.
Step 4: Calculating Square Footage
Once you have the measurements, find out the room’s square footage by multiplying the length by the width. This will show you how much carpet you need to buy.
For example, if your room is 10 by 20 ft, multiply 10 by 20 to get 200 sq ft.
Step 5: Installing Tack Strips
Tack strips are important for keeping carpet edges attached to the floor. They have small nails that hold the carpet in place.
Tack Strips on Wood
To install tack strips on a wood floor, nail them down with a hammer or nail gun. Space them evenly around the room, leaving a gap between the strip and the wall.
Tack Strips on Concrete
Installing tack strips on concrete floors needs a different method.
First, put construction adhesive on the back of the strip and press it onto the floor. Then, secure it with masonry nails.
Step 6: Choosing and securing the Right Underlay
The carpet pad, or underlay, makes your carpet softer and warmer. Lay the underlay across the way you will lay the carpet.
Types of Underlay
There are different underlay types, each offering comfort and support:
Foam Underlay
Foam underlay is popular because it’s light and cheap. It feels soft and absorbs impacts, great for busy areas.
Rubber Underlay
Rubber underlay is very strong and durable. It supports the carpet well and reduces noise, perfect for homes with more than one level.
Felt Underlay
Felt underlay feels luxurious and absorbs sound. Made from fibers, it gives soft cushioning and makes living areas quieter and more comfortable.
Secure the Underlay
Use a staple gun to attach the underlay to the floor, making sure it’s flat and smooth. Overlap the edges to hide any gaps or seams.
Factors to Consider when Choosing Underlayment
| Aspect | Consideration |
|---|---|
| Carpet Type | Different carpets need different underlays for the best results. |
| Level of Foot Traffic | Choose a strong, dense underlay for busy areas like hallways or living rooms so it doesn’t flatten. |
| Noise Reduction | Pick underlay that absorbs sound, like rubber or felt, to reduce noise between floors. |
| Special Requirements | If you have underfloor heating, get underlay with good thermal insulation to save energy and spread heat evenly. |
Step 7: Cutting the Carpet
Cutting the Carpet
Before putting the carpet down, make sure it fits the room right. Cutting it well is important for a nice finish. Here’s what to do:
Measuring and Marking
- Unroll the carpet in the room where it will go.
- Leave some extra carpet at the edges for trimming.
- Mark your measurements on the back of the carpet with chalk or a pencil. These marks are your guide for cutting.
Techniques
- Straight cuts: Use a utility knife and a straightedge to cut along the marked lines on the back. Press firmly for a clean cut.
- Corner cuts: For corners, make diagonal cuts from the room’s corner for a smooth look between walls.
- Trimming excess: After cutting the main parts, trim any extra material at the edges with a utility knife. Make precise cuts for a neat finish.
Extra Tips
- Check measurements twice before cutting to avoid mistakes.
- Take your time when cutting; don’t rush.
- Change dull blades often for clean cuts.
- Cut away from your body and keep fingers clear of the blade to stay safe.
Step 8: Stretching the Carpet
Stretching the Carpet
Use a knee kicker and carpet stretcher to pull the carpet tight across the room for a snug fit. Begin in the center and move toward the edges, using the knee kicker to attach the carpet to the tack strips.
Installing a Door Bar
After placing the carpet, put a door bar at any doorways or thresholds. This creates a smooth transition between rooms and keeps the carpet secure.
Step 9: Seaming Carpet
Seaming Carpet
Carpet seams should be tight, flat, and out of sight. Here are simple tips for seaming carpet:
- Use a knee kicker to push the carpet into the edges and seams. Start in the middle and move toward the walls.
- Put seam sealer on the carpet edges before joining them. This stops them from coming apart.
- Press the seam together with a seam roller. Roll from the middle to the edges.
- Try not to have seams in busy areas. If you must, make sure they go across the main walking path.
DIY vs. Professional Carpet Installation
Before starting your project, think about doing it yourself or hiring a pro.
| Option | Pros | Cons |
|---|---|---|
| DIY Installation | – Costs less upfront – You choose the schedule – Feel proud of your work | – Needs special tools – Hard to learn – Mistakes can be costly (wrinkles, poor seams) |
| Professional Installation | – Perfect results – Quick and efficient – Usually comes with a warranty | – Costs more – Less flexible with scheduling |
DIY is best if:
- You’re installing carpet tiles or in small rooms.
- You have (or can rent) the right tools.
- You’re good at measuring, cutting, and stretching carpet.
Hire a pro if:
- The area is big or oddly shaped.
- You’re using stretch-in or glue-down wall-to-wall carpet.
- You want guaranteed, lasting results.
✅ Tip: Even if you DIY, think about hiring a pro for tricky jobs like stairs or complex seams.
Need help with your carpet installation? Our flooring installation team can do it all — from prepping the subfloor to perfect carpet stretching and seaming. You can request a free estimate today and let us make it easy!
Common mistakes to avoid when installing carpet
Make sure to prepare seams well, so there are no visible lines in your carpet. Take time to do each installation step right.
- Seams not prepared properly: Can show lines or gaps. Align and secure seams well.
- Skipping cleaning and leveling subfloor: Leads to uneven surfaces. Ensure the subfloor is clean, dry, and smooth.
- Wrong measurements: May lead to buying too much or too little carpet. Double-check dimensions and consider room shape.
- Wrong underlay choice: Can affect durability and comfort. Choose the right one for the carpet and room.
- Improper tack strip installation: Might cause loose edges. Place tack strips securely around the edges.
- Not stretching carpet: Can cause wrinkles. Use a knee kicker or power stretcher for a tight fit.
- Ignoring room conditions: Humidity or temperature changes can affect the carpet. Prepare the room first.
- No expansion gap at walls: Can cause buckling. Leave a small gap for expansion.
We offer Carpet, Hardwood, Luxury Vinyl, and Laminate flooring. Financing options are available, and we work on location only.
Do You Need Help With Your Carpet Installation Project?
Now that you’ve learned how to install carpet flooring, you’re ready to make your space cozy and comfortable. If you prefer letting professionals handle the job, we’re here for you.
Our flooring installation team manages everything — from preparing the subfloor to stretching and seaming carpets — ensuring a perfect finish. We assist you in selecting the best carpet style and padding for your home and budget. For more on pricing, visit our Carpet Flooring Cost Guide to plan your project.
Contact us today to set up your free in-home consultation and check if we serve your area.
