Are you contemplating a metallic roof in your house, however you are unsure if it is attainable to put in it over your current shingles? The excellent news is that it’s attainable to put in a metallic roof over shingles, and it may be a good way to replace the look of your house whereas additionally defending it from the weather.
There are a number of explanation why you would possibly wish to contemplate putting in a metallic roof over shingles. Metallic roofs are extra sturdy than shingle roofs, they usually can final for 50 years or extra. They’re additionally extra resistant to fireplace, wind, and hail injury. Moreover, metallic roofs may be extra energy-efficient than shingle roofs, as they replicate the solar’s warmth away from your house in the summertime and assist to maintain it heat within the winter.
In case you’re involved in putting in a metallic roof over shingles, there are some things you want to remember. First, you may must guarantee that your roof is robust sufficient to assist the burden of the metallic roof. Second, you may want to put in a layer of underlayment between the shingles and the metallic roof. This underlayment will assist to guard the shingles from moisture and also will assist to scale back noise from the metallic roof. Lastly, you may want to decide on the proper sort of metallic roof in your house. There are a number of various kinds of metallic roofs obtainable, so you may want to perform a little research to search out the one which’s best for you.
Preparation of the Roof Floor
Inspecting the Roof Sheathing
Earlier than putting in metallic roofing over shingles, it’s important to completely examine the underlying roof sheathing. This includes eradicating a number of shingles in varied places to evaluate the situation of the sheathing, together with checking for any indicators of rot, buckling, or moisture injury. Figuring out and repairing any current points will present a strong basis for the metallic roof and forestall potential issues down the street.
Eradicating Free or Broken Shingles
As soon as the roof sheathing has been inspected, it’s essential to take away any unfastened or broken shingles to create a clean and stage floor for the metallic roofing. This course of may be time-consuming however is crucial to make sure correct adhesion and forestall future leaks. Utilizing a pry bar or shingle remover, rigorously elevate and detach the unfastened shingles, taking care to keep away from damaging the underlying sheathing.
Putting in Roofing Felt
After eradicating unfastened shingles, set up a layer of roofing felt over your entire roof floor. Roofing felt, also referred to as tar paper, acts as a water resistant barrier between the sheathing and the metallic roofing. Unroll the felt parallel to the eaves, making certain an overlap of not less than 6 inches between every roll. Safe the felt utilizing roofing nails spaced 6-12 inches aside. Correct set up of roofing felt will present a further layer of safety in opposition to moisture and assist forestall leaks.
| Roofing Felt Set up |
|—|—|
| Roll Width | 36 inches |
| Overlap | 6 inches |
| Nail Spacing | 6-12 inches |
| Nail Measurement | 1 1/4 inches |
Eradicating Broken or Free Shingles
Earlier than putting in a metallic roof, it is essential to take away any broken or unfastened shingles from the underlying roof construction. This step ensures a clean and safe set up, stopping water leaks and different potential points down the street.
Supplies Required:
| Merchandise | Amount |
|---|---|
| Pry bar | 1 |
| Hammer | 1 |
| Security glasses | 1 pair |
| Work gloves | 1 pair |
| Ladder | 1 |
Security Precautions:
- Put on security glasses and work gloves to guard your self from particles and sharp nails.
- Use a sturdy ladder and preserve correct footing whereas engaged on the roof.
- Be cautious of uncovered nails and sharp edges of shingles.
After you have assessed the roof and gathered the required supplies, observe these steps to take away broken shingles:
- Establish the broken or unfastened shingles: Examine the roof for any seen injury, corresponding to cracked, lacking, or curled shingles.
- Take away the unfastened shingles: Use a pry bar to rigorously elevate the unfastened shingles from the roof deck. If the shingles are nailed down, gently faucet the pry bar below the nail and pry it up.
- Take away broken shingles: For broken shingles, you might want to make use of a hammer to interrupt them into smaller items. Take away all items of the broken shingle from the roof deck.
- Clear the uncovered roof deck: After you have eliminated all of the broken or unfastened shingles, use a brush or brush to scrub any particles or mud from the uncovered roof deck.
Putting in a Roof Membrane
After the outdated shingles have been eliminated, a roof membrane ought to be put in to create a weather-resistant barrier between the decking and the metallic roofing. This membrane usually consists of an artificial materials, corresponding to ethylene propylene diene monomer (EPDM) or polyisobutylene (PIB), which is rolled out over the decking and secured with adhesive strips or nails. The membrane ought to overlap the perimeters of the decking by not less than 6 inches and be sealed with flashing tape at any seams or penetrations.
Along with offering climate resistance, a roof membrane can even act as a sound dampener, decreasing the noise of rain or hail hitting the roof. It could additionally assist to control the temperature within the attic, by reflecting warmth away in the summertime and retaining warmth within the winter.
Here’s a step-by-step information to putting in a roof membrane:
- Roll out the membrane over the decking, beginning on the eaves and dealing your means up the roof.
- Overlap the perimeters of the membrane by not less than 6 inches and safe them with adhesive strips or nails.
- Seal any seams or penetrations with flashing tape.
- Lower the membrane round any chimneys, vents, or different roof penetrations.
- Flash the penetrations with metallic or plastic flashing and seal the perimeters with caulk or sealant.
| Materials | Professionals | Cons |
|---|---|---|
| EPDM | Sturdy, UV-resistant, and fire-resistant | Could be costlier than different supplies |
| PIB | Light-weight, versatile, and straightforward to put in | Not as sturdy as EPDM |
Deciding on the Proper Metallic Roofing Panels
When choosing metallic roofing panels in your undertaking, there are a number of components to think about to make sure optimum efficiency and aesthetics:
Materials Kind:
| Materials | Advantages | Drawbacks |
|---|---|---|
| Galvalume | Light-weight, sturdy, corrosion-resistant | Larger value |
| Aluminum | Light-weight, corrosion-resistant, non-magnetic | Liable to denting |
| Copper | Sturdy, corrosion-resistant, aesthetically pleasing | Costly, can oxidize over time |
| Zinc | Light-weight, corrosion-resistant, self-healing | Restricted shade choices, may be brittle |
Profile:
Select a profile that enhances your house’s architectural fashion and gives the specified protection and safety from the weather. Widespread profiles embody standing seam, corrugated, and tile-style panels.
End:
The end of your metallic roofing panels will decide their look and sturdiness. Take into account choices corresponding to paint, Kynar 500 PVDF coating, or naked metallic.
Thickness and Gauge:
Panel thickness is measured in millimeters or gauges. Thicker panels (e.g., 24 gauge) provide higher sturdiness, whereas thinner panels (e.g., 32 gauge) are extra budget-friendly. Seek the advice of a roofing skilled to find out the suitable thickness in your local weather and utility.
Reducing and Putting in the Metallic Roofing Panels
1. Measure and minimize the metallic roofing panels to the specified size. Use a round noticed or a metallic shear for this job.
2. Set up the drip edge alongside the decrease fringe of the roof. Safe it with screws.
3. Set up the underlayment over the drip edge and shingles.
4. Begin putting in the metallic roofing panels from the underside of the roof and work your means up.
Overlapping the Metallic Roofing Panels
When putting in the metallic roofing panels, overlap the panels by 6 to 12 inches. The overlap ought to be within the route of water stream.
Safe the panels to the roof with screws. Use a screw gun for this job.
| Screw Kind | Advisable Size |
|---|---|
| Self-tapping screws | 1-1/2 inches |
| Hex-head screws | 2 inches |
The variety of screws required per panel will differ relying on the scale of the panel and the wind load in your space.
As soon as the metallic roofing panels are put in, seal the overlaps with a roofing sealant. It will assist to forestall water leaks.
Securing the Metallic Roofing Panels
As soon as the underlayment is put in, it is time to safe the metallic roofing panels. This course of includes a number of steps to make sure a sturdy and leak-proof set up.
6. Screw Down the Panels
The ultimate step in securing the metallic roofing panels is to screw them down into the purlins or roof sheathing. Use self-drilling screws which might be particularly designed for metallic roofing. Begin on the backside of the roof and work your means up. Align the panels and fasten them into place, ensuring to drive the screws straight into the underlying materials. Use a screw gun or impression driver to avoid wasting effort and time.
Screw spacing will differ relying on the panel sort and native constructing codes. Usually, it is really useful to put screws each 4 to six inches alongside the aspect laps and each 12 to 18 inches alongside the tip laps. For areas with excessive winds or snow hundreds, you might want to make use of nearer spacing.
Here is a desk summarizing the really useful screw spacing:
| Panel Kind | Facet Lap Screw Spacing | Finish Lap Screw Spacing |
|---|---|---|
| Standing Seam | 4 inches | 12 inches |
| R-Panel | 6 inches | 18 inches |
| Corrugated | 4 inches | 12 inches |
Word that these are common suggestions, and you must at all times observe the producer’s directions for particular panel sorts and set up situations.
Trimming and Ending the Roof Edges
As soon as the metallic panels have been put in, it is time to trim and end the roof edges to finish the set up. This includes including trim items to cowl any uncovered edges of the panels, in addition to putting in gutters and downspouts to handle rainwater.
Fascia
The fascia is a horizontal trim piece that runs alongside the eaves of the roof, protecting the uncovered ends of the metallic panels. It additionally gives a base for the gutters.
Soffit
The soffit is a trim piece that covers the underside of the roof overhang, between the fascia and the roof deck. It helps to enhance air flow and prevents pests from getting into the attic.
Drip Edge
The drip edge is a strip of metallic that’s put in alongside the eaves of the roof to forestall water from dripping behind the fascia and into the attic. It additionally helps to direct water away from the muse of the home.
Ridge Cap
The ridge cap is a trim piece that covers the height of the roof, the place two roof surfaces meet. It helps to maintain water out of the roof system and prevents leaks.
Gutter and Downspouts
Gutters and downspouts are important for managing rainwater and stopping water injury to the house. The gutter is a horizontal trough that collects rainwater from the roof, whereas the downspout is a vertical pipe that carries the water away from the home and into the bottom.
Putting in Gutter and Downspouts in Element
| Step | Description |
|---|---|
| 1 | Decide the gutter measurement and variety of downspouts wanted primarily based on the roof measurement and slope. |
| 2 | Mark the situation of the gutters and downspouts on the fascia and roof. |
| 3 | Set up gutter hangers to the fascia, spacing them evenly aside. |
| 4 | Place the gutters on the hangers and snap them into place. |
| 5 | Set up downspout brackets to the aspect of the home. |
| 6 | Place the downspouts on the brackets and safe them. |
| 7 | Join the downspouts to the gutters utilizing downspout elbows and extensions as wanted. |
| 8 | Lengthen the downspouts all the way down to the bottom and set up splash blocks to direct the water away from the muse. |
Sealing and Weatherproofing the Roof
1. Making use of Sealant Tape
Apply high-quality sealant tape alongside the joints between the metallic roof panels and the shingles. It will forestall moisture from penetrating the roof and inflicting leaks.
2. Putting in Eave Flashing
Set up eaves flashing alongside the decrease fringe of the roof the place it meets the fascia. It will forestall water from seeping below the metallic roof.
3. Utilizing Roofing Cement
Seal any gaps or uncovered nails with roofing cement. It will create a watertight barrier and forestall leaks.
4. Set up Valley Flashing
Valley flashing is put in on the intersections of roof slopes. It directs water away from the valley and prevents it from seeping into the roof.
5. Set up Pipe Flashings
Set up pipe flashings round any pipes that penetrate the roof. These flashings will forestall water from leaking across the pipes.
6. Set up Vent Flashings
Vent flashings are put in round roof vents to forestall water from getting into the attic.
7. Sealing Round Chimneys
Seal the realm round chimneys with high-temperature silicone sealant. It will forestall water from leaking across the chimney and damaging the roof.
8. Examine and Preserve Commonly
Commonly examine the roof for any indicators of injury or leaks. Clear gutters and downspouts to forestall water buildup. Promptly restore any points to take care of the roof’s integrity and forestall expensive injury.
| Inspection Factors | Frequency |
|---|---|
| Verify for unfastened nails or screws | Yearly |
| Study sealant tape for injury | Each 2-3 years |
| Examine flashing for cracks or tears | Each 5-7 years |
Correct Air flow for the Metallic Roof
Correct air flow is essential for a metallic roof over shingles to forestall moisture accumulation, corrosion, and untimely roof failure. Listed here are some important concerns:
1. Consumption Vents
Consumption vents permit air to enter the attic house on the eaves or soffits. This creates an airflow path and attracts exterior air into the attic.
2. Exhaust Vents
Exhaust vents expel heat, moist air from the attic by roof vents, corresponding to ridge vents, gable vents, or turbine vents. These vents create a unfavorable strain that attracts air by the consumption vents.
3. Roofing Underlayment
Roofing underlayment with moisture-wicking properties helps to forestall moisture from penetrating the attic house and reduces the chance of mildew development.
4. Air Gaps
Sustaining a 1- to 1.5-inch air hole between the metallic roofing and the underlayment permits air to flow into and carry away moisture.
5. Ridge Vents
Ridge vents are steady vents that run alongside the ridge of the roof and permit air to flee. They’re extremely efficient in releasing sizzling air and moisture.
6. Gable Vents
Gable vents are put in within the gable ends of the roof and draw air upward from the soffits to the ridge vent.
7. Turbine Vents
Turbine vents are powered by the wind and rotate to expel air from the attic. They’re extremely environment friendly however may be noisy.
8. Soffit Vents
Soffit vents are small vents put in within the soffit of the eaves and permit air to enter the attic.
9. Air Consumption to Exhaust Ratio
The ratio of consumption to exhaust vents ought to be balanced. For each sq. foot of consumption vent space, there ought to be two to a few sq. ft of exhaust vent space. This ensures correct airflow and air flow all through the attic house.
| Kind of Vent | Description |
|---|---|
| Consumption Vent | Permits air to enter the attic house |
| Exhaust Vent | Expels heat, moist air from the attic |
| Roofing Underlayment | Protects the attic from moisture |
| Air Hole | Permits air to flow into between the metallic roof and underlayment |
Upkeep and Inspection of the Metallic Roof
Sustaining and inspecting your metallic roof recurrently ensures its longevity and efficiency. Listed here are essential steps:
1. Annual Inspection
Schedule an annual inspection to verify for indicators of injury, corrosion, or unfastened parts. Examine all areas, together with seams, flashings, and fasteners.
2. Verify Drainage
Particles can accumulate in gutters and downspouts, obstructing correct drainage. Clear them recurrently to forestall water pooling and potential leaks.
3. Take away Particles
Use a smooth brush or leaf blower to take away leaves, dust, and different particles from the roof floor. Accumulation can lure moisture and promote corrosion.
4. Seal Leaks
In case you detect any leaks, promptly seal them utilizing acceptable sealant particularly designed for metallic roofs.
5. Contact Up Paint
Minor paint injury can result in corrosion. Contact up any scratches or scuffs with a high-quality metallic roof paint matched to the unique shade.
6. Examine Flashings
Flashings round chimneys, vents, and valleys are essential for stopping water infiltration. Verify for any unfastened or broken flashings and restore them instantly.
7. Verify Fasteners
Fasteners step by step loosen over time. Commonly examine them and tighten any unfastened screws or nails to forestall leaks or wind injury.
8. Examine Seams
Seams are important factors of vulnerability. Verify for any unfastened or indifferent seams and reseal them utilizing an acceptable sealant.
9. Verify for Rust
Rust is an early signal of corrosion. Examine the roof for indicators of rust and promptly deal with any points to forestall additional injury.
10. Pet Precautions
Pets can scratch or puncture metallic roofs. Maintain them off the roof or use protecting measures corresponding to mats or boundaries to reduce injury.
How To Put Metallic Roof Over Shingles
It’s attainable to put in a metallic roof over shingles, however it is very important be aware that this isn’t a typical follow. Metallic roofs are usually put in over plywood or OSB decking, and putting in them over shingles can create quite a few issues. Nonetheless listed below are the steps:
- Take away any unfastened or broken shingles.
- Set up a layer of roofing felt纸毛毡纸 over the shingles.
- Set up the metallic roofing panels over the roofing felt.
- Safe the metallic roofing panels with screws or nails.
- Apply a sealant across the edges of the metallic roofing panels.
Individuals Additionally Ask
Can you place metallic roofing over shingles?
Sure, it’s attainable to put in a metallic roof over shingles, however it’s not a typical follow. Metallic roofs are usually put in over plywood or OSB decking, and putting in them over shingles can create quite a few issues.
What are the challenges of putting in a metallic roof over shingles?
One of many largest challenges of putting in a metallic roof over shingles is that the shingles can create an uneven floor, which may make it tough to put in the metallic roofing panels correctly. Moreover, the shingles can lure moisture, which may result in corrosion of the metallic roofing panels.
What are the advantages of putting in a metallic roof over shingles?
There are some advantages to putting in a metallic roof over shingles, corresponding to elevated sturdiness, vitality effectivity, and fireplace resistance. Nonetheless, it is very important weigh these advantages in opposition to the challenges earlier than making a call.
