How To Install A Metal Roof Over Shingles

Embark on a transformative roofing journey by seamlessly putting in a steel roof over your present shingles. Not like conventional roof replacements that require intensive removing and disposal, this modern method preserves your present roof whereas enhancing its sturdiness and aesthetics. With meticulous planning and cautious execution, you possibly can elevate your private home’s safety and curb attraction with out the trouble and expense of an entire tear-off.

Transitioning to a steel roof presents a myriad of advantages that make it an funding value contemplating. Improve your private home’s vitality effectivity, as steel roofs replicate daylight, lowering warmth absorption and decreasing cooling prices. Embrace peace of thoughts realizing that your roof can stand up to excessive climate circumstances, reminiscent of excessive winds, hail, and heavy snow masses. Furthermore, steel roofs are just about maintenance-free, eliminating the necessity for expensive repairs or replacements down the highway.

How To Install A Metal Roof Over Shingles

Earlier than embarking on this roofing journey, meticulous preparation is paramount. Be certain that your present shingles are in good situation, as any underlying injury can compromise the integrity of your new steel roof. Clear away any particles or moss from the floor and examine for any areas which will require extra repairs. By laying a stable basis, you possibly can set the stage for a profitable and long-lasting steel roof set up.

Assessing Shingle Roof Compatibility

Earlier than putting in a steel roof over shingles, it is essential to find out in case your present shingle roof is suitable with the steel roofing system you plan to put in. Incompatible shingles can compromise the efficiency and longevity of the steel roof, resulting in potential points down the road.

The next components ought to be thought-about when assessing shingle roof compatibility:

  • Situation of Shingles: Shingles ought to be in good situation, free from extreme injury, cupping, buckling, or lacking shingles. Free or compromised shingles could not present a secure floor for the steel roof, resulting in potential points with attachment and climate resistance.
  • Sort of Shingles: Sure sorts of shingles, reminiscent of fiber cement or rubber shingles, will not be appropriate for putting in a steel roof over. These shingles could have totally different properties and textures that may have an effect on the adhesion and efficiency of the steel roofing system.
  • Slope of Roof: The slope of the roof can also be an element to think about. Steel roofing programs sometimes require a minimal slope, often round 1:12. If the roof slope is simply too shallow, it could not be capable of successfully shed water and particles, doubtlessly resulting in leaks and different issues.
  • Roof Construction: The structural integrity of the roof is essential to help the extra weight of a steel roof. Be certain that the underlying roof framing is ample to deal with the steel roofing system’s weight with out inflicting extreme deflection or structural injury.

Inspecting the Roof Deck

Earlier than putting in a steel roof over shingles, it is essential to fastidiously examine the prevailing roof deck to make sure its integrity and suitability for the brand new roofing system.

This is a step-by-step information on easy methods to examine the roof deck:

  1. Clear the roof: Take away any particles, leaves, or objects from the roof deck. This may permit you to see the floor clearly and determine any potential points.
  2. Search for gentle or spongy spots: Stroll over the roof deck and test for any areas that really feel gentle or spongy underfoot. This might point out moisture injury or rot, which must be addressed earlier than putting in the steel roof.
  3. Study the shingles and underlayment: Examine the situation of the prevailing shingles and underlayment. Exchange any lacking, broken, or curled shingles. Make sure the underlayment is undamaged and freed from tears or punctures.
  4. Test the roof construction: Examine the roof joists, rafters, and trusses for any indicators of injury or decay. Search for cracks, free joints, or sagging. If you happen to discover any structural points, seek the advice of a certified roofing contractor.
  5. Take note of the flashing: Study the flashing round chimneys, vents, and skylights. Make sure the flashing is in good situation and correctly sealed to forestall water leaks.
  6. Doc your findings: Take photographs or make notes of any points you discover through the inspection. This may function a report of the roof’s situation earlier than putting in the steel roof.

Beneficial Instruments for Roof Deck Inspection:

Software Function
Roofing ladder Protected and secure entry to the roof
Pry bar or flat shovel Probing for gentle spots
Flashlight Illuminating darkish or obstructed areas
Digicam or notepad Documenting inspection findings

Putting in Underlayment

The underlayment is a crucial element of any roofing system as a result of it offers extra safety in opposition to moisture, wind, and ice. When putting in a steel roof over shingles, you need to take away the prevailing shingles earlier than putting in the underlayment.

There are lots of several types of underlayment obtainable, so selecting one that’s applicable to your local weather and roofing system is crucial. Normally, thicker underlayment offers extra safety however can also be costlier. A “breathable” underlayment permits moisture to flee whereas stopping water from penetrating the roof deck.

Step 1: Take away the Outdated Shingles

Use a pry bar to fastidiously take away the outdated shingles. Work in small sections, beginning on the high of the roof and dealing your method down. Watch out to not injury the roof deck.

Step 2: Examine the Roof Deck

As soon as the outdated shingles have been eliminated, examine the roof deck for any injury. Restore any broken areas earlier than putting in the underlayment.

Step 3: Set up the Underlayment

Roll out the underlayment over the roof deck, beginning on the backside and dealing your method up. Overlap the underlayment by not less than 6 inches, and safe it with roofing nails.

Extra Ideas for Putting in Underlayment over Shingles

Tip
To make sure a correct seal, overlap the underlayment alongside the perimeters of the roof deck.
Use a roofing nailer to safe the underlayment to the roof deck.
Keep away from strolling straight on the underlayment, as this might injury it.
If you’re putting in a steel roof over a steep-sloped roof, think about using a self-adhering underlayment for added safety in opposition to wind.

Putting in Drip Edge

Drip edge is steel flashing that’s put in alongside the eaves and rakes of the roof to forestall water from seeping underneath the shingles and inflicting injury to the roof deck. It’s sometimes fabricated from aluminum or galvanized metal and is obtainable in a wide range of colours to match the roof shingles.

To put in drip edge, comply with these steps:

  1. Measure and lower the drip edge to the specified size.
  2. Place the drip edge alongside the eaves or rakes of the roof, ensuring that it’s flush with the sting of the roof deck.
  3. Safe the drip edge to the roof deck utilizing roofing nails or screws spaced 6 to eight inches aside.
  4. Overlap the drip edge items by not less than 2 inches and seal the seams with roofing cement.
  5. Bend the drip edge up at a 90-degree angle on the corners of the roof to create a drip path for water. Use roofing cement to seal the corners and forestall water from leaking by way of.
Materials Gauge Width Size
Aluminum 0.032″ 10″ 10′
Galvanized metal 0.024″ 12″ 12′

Positioning Steel Roof Panels

After you have put in the underlayment, you can begin positioning the steel roof panels.

1. Begin on the Backside

Start putting in the panels on the backside fringe of the roof and work your method up.

2. Overlap the Panels

Every panel ought to overlap the earlier panel by not less than 1-1/2 inches.

3. Use Screws to Safe

Use roofing screws to safe the panels to the roof deck. Drive the screws by way of the highest of the panel and into the deck.

4. Line Up the Panels

Be sure that the panels are lined up straight and evenly earlier than securing them.

5. Lower the Panels

If crucial, lower the panels to suit round obstacles reminiscent of chimneys or skylights.

6. Seal the Overlaps

To forestall water from seeping into the roof, apply a sealant to the overlaps between the panels.

Sort of Sealant Software
Butyl tape Utilized to the underside of the overlap earlier than putting in the panels
Butyl caulk Utilized to the joint between the panels after set up
Silicone caulk Used for areas that require a extra versatile seal

Securing Steel Panels

As soon as the underlayment is put in, you possibly can start securing the steel panels. Use 1-inch roofing screws to lock the panels to the roof deck by way of the underlayment. Drive the screws into the excessive ribs of the panels to make sure a decent match. Begin on the eaves and work your method up the roof, overlapping the panels by not less than 2 inches.

Use a chalk line to mark the situation of the screws, making certain that they’re evenly spaced. Countersink the screws barely beneath the floor of the panels to forestall injury to the paint end.

On the gable ends, you will want to trim the panels to suit. Use a steel shear or round noticed with a steel chopping blade to chop the panels to the specified size. Make sure you put on security glasses and gloves when chopping steel.

As soon as the panels are lower to measurement, safe them to the roof deck with 1-inch roofing screws. Overlap the panels by not less than 2 inches and countersink the screws barely beneath the floor of the panels.

On the ridge of the roof, you will want to put in a ridge cap. A ridge cap is a steel piece that covers the joint between the 2 roof panels. Safe the ridge cap to the roof deck with 1-inch roofing screws.

As soon as the steel panels are secured, you possibly can set up the flashing. Flashing is a steel materials put in round chimneys, vents, and different roof penetrations to forestall water leaks. Lower the flashing to suit across the penetration and safe it with roofing cement and 1-inch roofing screws.

Trimming and Adjusting

It is vital to chop the shingles in order that the brand new steel panels can match appropriately and overhang the outdated shingles by 12 inches. To do that, use a chalk line to snap a straight line 12 inches from the underside of the outdated shingles.

Subsequent, use a utility knife (or roofing snips and shears) to trim the shingles alongside the chalk line. Hold the lower as straight and at the same time as attainable. If it’s essential make a curve lower, you need to use a jigsaw or scroll noticed.

As soon as the shingles are all trimmed, you can begin putting in the steel roof panels. Relying on the kind of steel panel you might be utilizing, it’s possible you’ll want to regulate them barely to suit tightly collectively.

To regulate the panels, use a pair of pliers or tin snips to softly bend or crimp the perimeters. Watch out to not bend the panels an excessive amount of, as this may injury them. As soon as the panels are adjusted, safe them in place with screws or nails.

Adjusting Panel Overhang

The overhang of the steel panels is vital to make sure correct drainage and forestall water from leaking behind the roof. The overhang ought to be not less than 12 inches, and it may be adjusted by trimming the panels.

To trim the panels, use a chalk line to snap a straight line 12 inches from the sting of the roof. Then, use a utility knife or roofing snips to chop the panels alongside the chalk line.

Panel Sort Adjustment Methodology
Standing Seam Crimp the seam to regulate the width
Corrugated Overlap the panels and regulate the overlap width
Interlocking Slide the panels collectively and regulate the interlocking place

Sealing Laps and Seams

To make sure a water-proof seal, all laps and seams within the steel roofing system have to be correctly sealed. This entails utilizing a high-quality sealant or mastic that’s suitable with the steel and the underlayment.

Lap Sealants

Lap sealants are used to seal the overlaps between the steel roofing panels. These sealants are sometimes utilized utilizing a caulking gun.

Seam Sealants

Seam sealants are used to seal the seams the place two or extra panels are joined collectively. These sealants are sometimes utilized utilizing a brush or a curler.

Butyl Tape

Butyl tape is a self-adhesive tape that can be utilized to seal laps and seams. Any such tape is usually utilized by hand.

Caulking

Caulking is a typical sealant that can be utilized to seal laps and seams. Nonetheless, you will need to use a caulking that’s suitable with the steel and the underlayment.

Sealant Software

When making use of sealants or mastic, you will need to comply with the producer’s directions. This may make sure that the sealant is correctly utilized and can present the specified degree of safety.

Sealant Inspection

You will need to examine the sealant often to make sure that it’s nonetheless in good situation. If the sealant is cracked or broken, it ought to be repaired or changed.

Sealant Desk

The next desk offers a abstract of the several types of sealants that can be utilized for steel roofing:

Sort of Sealant Software
Lap Sealant Overlaps between roofing panels
Seam Sealant Seams the place panels are joined
Butyl Tape Self-adhesive tape for laps and seams
Caulking Appropriate with steel and underlayment

How To Set up A Steel Roof Over Shingles

Putting in a steel roof over shingles may be a good way so as to add sturdiness and worth to your private home. Nonetheless, it is vital to notice that it is a extra complicated course of than putting in a steel roof over plywood. Listed here are the steps on easy methods to set up a steel roof over shingles:

1. **Put together the shingles.** Earlier than you start putting in the steel roof, it’s essential put together the shingles by eradicating any free or broken shingles. You must also test for any areas the place the shingles should not correctly sealed and apply sealant as wanted.

2. **Set up the underlayment.** The underlayment is a layer of fabric that’s put in between the shingles and the steel roof. It helps to guard the shingles from moisture and wind injury. There are a number of several types of underlayment obtainable, so you’ll want to select one that’s applicable to your local weather and the kind of steel roof you might be putting in.

3. **Set up the steel roof panels.** The steel roof panels are put in over the underlayment. They’re sometimes connected to the roof deck with screws or nails. Make sure you comply with the producer’s directions for putting in the panels.

4. **Trim the steel roof panels.** As soon as the steel roof panels are put in, it’s essential trim them across the edges of the roof. This may be performed with a noticed or a steel shears.

5. **Seal the steel roof panels.** The ultimate step is to seal the steel roof panels. This may assist to forestall water from leaking into the roof. There are a number of several types of sealants obtainable, so you’ll want to select one that’s applicable for the kind of steel roof you might be putting in.

Folks Additionally Ask About Putting in Steel Roofing Over Shingles

What are the advantages of putting in a steel roof over shingles?

There are a number of advantages to putting in a steel roof over shingles together with:

  • Elevated sturdiness: Steel roofs are rather more sturdy than shingle roofs and might final for 50 years or extra.
  • Decrease vitality prices: Steel roofs can replicate warmth away from your private home, which can assist to scale back your vitality prices.
  • Elevated fireplace resistance: Steel roofs are fireplace resistant and can assist to guard your private home from fireplace injury.
  • Improved curb attraction: Steel roofs may give your private home a extra fashionable and trendy look.

### Is it troublesome to put in a steel roof over shingles?

Putting in a steel roof over shingles is extra complicated than putting in a steel roof over plywood, however it’s nonetheless a doable mission for DIYers with some expertise. Make sure you comply with the producer’s directions fastidiously and take all crucial security precautions.

How a lot does it price to put in a steel roof over shingles?

The fee to put in a steel roof over shingles will fluctuate relying on the dimensions of your roof, the kind of steel roof you select, and the complexity of the set up. Nonetheless, you possibly can count on to pay between $5 and $10 per sq. foot for a steel roof.