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Questions & Answers



What makes Grinnell Pavingstones the best choice for driveways,
walkways and patios?


Why are they called interlocking pavers?

Will freezing and thawing damage pavers?

Will snow plows damage or dislodge my pavers?

Will deicing salts damage my pavers?

If a paver gets chipped or damaged, can it be replaced?

Do I need to seal the pavers?

Is there a way to prevent weeds from growing between paving stones?
Will landscape fabric or plastic sheeting help?


Do pavers lose color with age?

Will pavers be slippery?

I have an existing concrete walkway that is in pretty good shape.
Can I lay pavers over top?


What is Efflorescence?




What makes Grinnell Pavingstones the best choice for driveways,
walkways and patios?
Unlike asphalt and poured concrete, our pavers are virtually maintenance free and do not need to be regularly sealed or replaced. Grinnell pavers are about three times stronger than regular poured concrete and have a maximum water absorption rate of 5%. Plus, you can use your new patio, walkway or driveway immediately after compacting the pavers and sweeping with joint sand.

Why are they called interlocking pavers?
It is the system that makes them interlocking. When installed properly, the combination of pavers, bedding sand, Paver-Edge Restraints and joint sand create the interlocking that provides a unified, flexible pavement.

Will freezing and thawing damage pavers?
No, damage from ice is virtually non-existent. The joints allow the pavers to move without cracking in freeze and thaw cycles.

Will snow plows damage or dislodge my pavers?
No. Properly installed paving stones fit tightly together and form a uniform surface that presents no problem for plows, snowblowers, and shovels.

Will deicing salts damage my pavers?
No. Our high-density concrete pavers resist deterioration from deicing salts that are applied at the proper application rates.

If a paver gets chipped or damaged, can it be replaced?
Yes, very easily.We recommend that you save a few pavers from your initial installation, just in case you need to replace one or two. Pavers normally can be pried out using two flathead screwdrivers.

Do I need to seal the pavers?
No, pavers are durable. Sealing, however, may enhance the colors and may prevent staining. Allow a minimum of 60-90 days after completion of the installation before sealing. Sealers are not permanent and should be reapplied every three to five years. Only water-based sealers can be used in New Jersey and New York.

Is there a way to prevent weeds from growing between paving stones?
Will landscape fabric or plastic sheeting help?

Weeds grow from wind-blown seeds that fall onto pavers and germinate down into joints. They do not grow up from below, so using landscape fabric or plastic sheeting is unnecessary.Weeds can be removed by hand or with a biodegradable herbicide. Sealers or sand binders can be useful in helping prevent weed growth.

Do pavers lose color with age?
For long-lasting, durable colors, Grinnell concrete masonry stones are saturated with color throughout- not just on the surface. To achieve this, we blend pure pigment into our special concrete mixture, using only the finest iron oxides. Pigments used to color concrete pavingstones and wall stones are very stable. Dirt, normal wear, and weathering may appear to change the color over time. Cleaning and sealing may restore and enhance color.

Will pavers be slippery?
No, their surface texture is ideal for obtaining safe traction in pedestrian, vehicular and pool applications.

I have an existing concrete walkway that is in pretty good shape.
Can I lay pavers over top?

While not the preferred method, pavers can be laid on top of existing concrete walkways. Two issues must be addressed. First, the grade will be raised by about 3" (the thickness of the pavers plus the bedding sand). This is particularly critical if any doorways are involved. Secondly, if the existing concrete slab should raise or drop with freeze/thaw conditions the pavers will do the same.

What is Efflorescence?
Efflorescence is a whitish powder-like deposit, common in concrete and masonry products that normally will disappear over time with weathering. Although it may present an aesthetic concern, efflorescence will not affect the structural performance of pavers or wall systems. Efflorescence is a natural occurrence for which Grinnell accepts no responsibility nor liability. Contact your local Grinnell Dealer for additional information and copy of the Interlocking Concrete Pavement Institute (ICPI) publication “Managing Efflorescence”.
 
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