DIY Window Sunlight Blocking: Simple Solutions for Heat and Glare Control
DIY window sunlight blocking: simple solutions for heat and glare control
Excessive sunlight stream through windows can create numerous problems in your home. From overheat rooms and increase cool costs to fade furniture and create uncomfortable glare on screens, unwanted sunlight affect both comfort and your wallet. Luckily, there be many DIY solutions to block or reduce sunlight without professional installation or significant expense.
Understand why blocking sunlight matters
Before diving into solutions, it helps to understand the benefits of control sunlight through your windows:
- Reduce indoor temperature by up to 15 degrees in summer months
- Lowers energy bills by decrease air conditioning needs
- Prevents UV damage to furniture, flooring, and artwork
- Minimizes glare on television and computer screens
- Create a more comfortable environment for sleep, working, and relax
Quick and temporary solutions
Need immediate relief from the sun? These quick fixes require minimal effort and materials:
Cardboard cutouts
Possibly the simplest solution is to cut unlifelike to fit your window dimensions. While not esthetically pleasing, cardboard efficaciously block light and cost well-nigh nothing.
Materials need:
- Cardboard boxes
- Scissors or utility knife
- Measure tape
- Painter’s tape (to secure without damage paint )
Steps:
- Measure your window dimensions
- Cut unlifelike to size, allow an extra inch on all sides
- Secure to window frame with painter’s tape
- For a cleaner look, cover cardboard with fabric or decorative paper
Aluminum foil method
Aluminum foil provide closely 100 % light blockage and help insulate windows. This method is popular for shift workers who sleep during daylight hours.
Materials need:
- Aluminum foil
- Spray bottle with water
- Scissors
Steps:
- Cut foil to fit window pane dimensions
- Gently spray window glass with water
- Press foil shiny side out against the damp glass
- Smooth out air bubbles from center outwards
Note:
Check local homeowner association rules before use this method, as some communities restrict foil on Windows visible from the street.
Semi-permanent diDIYindow treatments
For longsighted last solutions that ease allow flexibility, consider these DIY options:
No sew fabric window coverings
Fabric window coverings offer a decorative touch while block light efficaciously.
Materials need:
- Fabric (blackout fabric work advantageously )
- Tension rod or curtain rod
- Fabric scissors
- Hem tape or fabric glue
- Iron (iif youuse hem t)e )
- Measure tape
Steps:
- Measure window width and desire length
- Cut fabric, add 4 inches to width and 6 inches to length for hem
- Create a rod pocket by fold over 3 inches at the top and secure with hem tape or fabric glue
- Hem sides and bottom by fold over 1.5 inches double and secure
- Install tension rod and hang your new curtain
DIY Roman shades from mini blinds
Transform inexpensive mini blinds into stylish Roman shade that block light efficaciously.
Materials need:
- Mini blinds (sized to fit your window )
- Fabric (slenderly wider than your blinds )
- Fabric glue or hot glue gun
- Scissors
- Measure tape
Steps:
- Amply lower the mini blinds and lock them in the down position
- Remove all slats except for every 7 8 inches and the bottom row
- Cut fabric to size, allow 2 inches extra on all sides
- Lay fabric flat and place blinds on top
- Fold fabric edges and glue to the back of the blind header
- Glue fabric to each remain slat, create pleats
- Reinstall the blinds in your window
Effective window films and coverings
Window films provide excellent sun blocking while maintain visibility and are comparatively simple to apply.
DIY window film installation
Window films come in various types, include heat reducing, privacy, and blackout options.
Materials need:
- Window film (measure window cautiously before purchase )
- Spray bottle with soapy water solution (a few drops of dish soap in water )
- Squeegee or credit card
- Utility knife or scissors
- Lint free cloth
Steps:
- Clean window good and ensure it’s whole dry
- Measure and cut film to size, add an extra inch on all sides
- Spray window liberally with soapy water solution
- Remove backing from film and spray the adhesive side with soapy water
- Apply film to window, start from the top
- Use squeegee to remove air bubbles and excess water, work from center outwards
- Trim excess film with utility knife
- Allow 24 48 hours to dry wholly
Bubble wrap insulation
Amazingly effective, bubble wrap not merely block some sunlight but besides provide excellent insulation.
Materials need:
- Large bubble wrap
- Spray bottle with water
- Scissors
Steps:
- Cut bubble wrap to fit window pane
- Spray window with plain water
- Apply bubble wrap with bubble side face glass
- Press softly to secure
This solution can last for months and easy peel off when no yearn need. The bubbles create an insulate air pocket while diffuse light.
Natural solutions for sunlight control
For those prefer eco-friendly approaches, consider these natural options:
Strategic plant placement
Indoor and outdoor plants can filter sunlight while improve air quality.
Indoor options:
- Tall potted plants like fiddle leaf figs or palms
- Hang plants near windows
- Bamboo or reed plant stand
Outdoor options:
- Fasting grow vines on trellises
- Strategic tree planting for long term shade
- Potted plants on window sills or hang baskets
DIY outdoor window shades
Create exterior sun blocks that prevent heat from reach the glass.
Materials need:
- Bamboo reed fencing or outdoor fabric
- Eye hooks
- Rope or cord
- Drill
- Scissors
Steps:
- Measure window width and desire length
- Cut bamboo fencing or fabric to size
- Install eye hooks above window and below sill
- Thread cord through fencing / fabric and eye hooks
- Create a pulley system to raise and lower as need
Creative repurposing projects
Give new life to household items by turn them into effective sunlight blockers.
Old map or poster roller shades
Materials need:
- Old maps, posters, or decorative paper
- Discard roller shade or spring load curtain rod
- Spray adhesive
- Scissors
- Clear contact paper (optional for durability )
Steps:
- Remove fabric from old roller shade
- Cut decorative paper to match shade dimensions
- Apply spray adhesive to roller shade backing
- Cautiously position and smooth paper onto adhesive
- For durability, cover with clear contact paper
- Reinstall roller mechanism
Magnetic window covers
Perfect for rentals or situations where you can’t modify windows permanently.

Source: pjfitz.com
Materials need:
- Foam board or thin plywood
- Blackout fabric or decorative fabric
- Magnetic tape with adhesive backing
- Fabric glue or staple gun
- Scissors
- Measure tape
Steps:
- Measure window frame dimensions
- Cut foam board / plywood to fit inside window frame
- Cut fabric with 2 inch overhang on all sides
- Wrap fabric around board and secure with glue or staples
- Apply magnetic tape strips around edges of cover board
- Apply to correspond magnetic strips to window frame
- Press board into place when needed, remove when not
Strategic considerations for different window types
Different window styles require specific approaches for maximum effectiveness.
Skylights
Skylights present unique challenges since they’re oftentimes out of reach.
DIY solutions:
- Tension rods with fabric panels install use an extension pole
- Remote control suction cup hooks with fabric panels
- Expandable window screens cover with light block material
Large picture windows
For oversized windows where traditional methods might be impractical:
DIY solutions:
- PVC pipe frame cover with blackout fabric
- Hinged fold screens that can be position as need
- Sectional panels that connect with Velcro for easy assembly / dismantlement
Seasonal considerations
Different seasons may require adjust your approach to window coverings.
Summer solutions
In summer, prioritize heat reduction while maintain some light:

Source: diyquickly.com
- Reflective window film that bounce heat outside
- Light color exterior shade that reflect kinda than absorb heat
- Mesh screens that block UV while allow airflow
Winter adaptations
In winter, you might want to block drafts while allow beneficial solar heat:
- Insulate window films that notwithstanding allow sunlight
- Thermal curtains that can be open during peak sun hours
- Draft blockers at window bases
Maintenance tips for DIY window treatments
Extend the life of your DIY solutions with proper care:
- Regularly dust or vacuum fabric treatments to prevent dust buildup
- Clean window films with non-abrasive cleaners solely
- Check adhesives and fasteners monthly, specially in humid conditions
- Store seasonal solutions flat and protect from moisture
- Take photos of installation methods for easy reference when reinstall
Cost comparison of DIY methods
Budget considerations oftentimes drive DIY choices. Here’s how various methods compare:
-
Ultra budget options
($$0$10 per window ))cardboard, aluminum foil, repurpose sheets -
Low-cost solutions
($$10$30 per window ))basic window film, bubble wrap, no sew curtains from discount fabric -
Mid-range projects
($$30$60 per window ))quality blackout fabric treatments, insulate films, diyDIYmRomanade -
Higher end DIY
($$60$100 per window ))custom build exterior shades, combination solutions with both aesthetic and functional benefits
Final thoughts on DIY sunlight block
Control sunlight through your windows doesn’t require expensive professional solutions. With creativity and basic materials, you can importantly improve your home’s comfort while reduce energy costs. The best approach frequently combines methods — peradventure reflective film on south face windows, blackout curtains in bedrooms, and decorative screens in living areas.
Remember that seasonal adjustments maximize benefits. What work absolutely in summer might need modification in winter when some solar heat gain become desirable. By mix and match these DIY techniques, you can create a customize solution perfect for your specific windows, climate, and lifestyle needs.
About significantly, don’t be afraid to experiment. Many of these solutions require minimal investment and can be easy change if they don’t work as expect. Your perfect window treatment might combine elements from several different methods, adapt to your unique situation.