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Lime Free Stucco

SynLime allows masonry and stucco professionals to eliminate Type S Lime from their batches and mixes.  And better yet, SynLime doesn’t require the use of fly ash, clay, diatamaceous earth, or other additives required with lime.

SYNLIME™ is specifically formulated to produce high plasticity and excellent water retention.  The end result is a more workable mix with higher PSI levels that is clean, safe, and worker friendly.  Its increased bonding strength to foam and wire is also superior to lime.   Is there a safe alternative to lime in stucco?  The answer is a resounding yes… SYNLIME™.

Masonry Bond

Mortar or Masonry Bond refers to the adhesion of the joint mortar to the masonry units or to the reinforcing steel.

Increase your masonry bond by utilizing a patented new admixture called SynLime.

Pattern bond refers to the pattern formed by the masonry units and mortar joints on the face of a wall. The pattern may result from the structural bond, or may be purely decorative and unrelated to the structural  bond.  Figure  8-33  shows  the  six  basic pattern   bonds   in   common   use   today:   running, common  or  American,  Flemish,  English,  stack,  and English  cross  or  Dutch  bond.

The  running  bond  is  the  simplest  of  the  six patterns,  consisting  of  all  stretchers.  Because  the bond  has  no headers,  metal  ties  usually  form  the structural bond. The running bond is used largely in cavity  wall  construction, brick  veneer  walls,  and facing tile walls made with extra wide stretcher tile.The common, or American, bond is a variation of the  running  bond,  having  a  course  of  full-length headers  at  regular  intervals  that  provide  the structural bond as well as the pattern.  Header courses usually appear  at   every   fifth,   sixth,   or   seventh course, depending on the structural bonding requirements.  You can vary the common bond with a Flemish header course. In laying out any bond pattern, be sure to start the  corners  correctly.  In  a  common  bond,  use  a three-quarter  closure  at  the  corner  of  each  header course. In  the  Flemish  bond,  each  course  consists  of alternating headers and stretchers. The headers in every  other  course  center  over  and  under  the stretchers  in  the  courses  in  between.

The  joints between  stretchers  in  all  stretcher  courses  align vertically.   When   headers   are   not   required   for structural  bonding,  you  can  use  bricks  called  blind headers. You can start the corners in two different ways.  In  the  Dutch  corner,  a  three-quarter  closure starts each course. In the English corner, a 2-inch or quarter closure starts the course.The English bond consists of alternating courses of headers and stretchers. The headers center over and under the stretchers. However, the joints between stretchers  in  all  stretcher  courses  do  not  align vertically. You can use blind headers in courses that are not structural bonding courses.The stack bond is purely a pattern bond, with no overlapping  units  and  all  vertical  joints  aligning.  You Must  use  dimensionally  accurate  or  carefully re matched  units  to  achieve  good  vertical  joint alignment.  You  can  vary  the  pattern  with  combi-nations and modifications of the basic patterns shown in  figure  8-33.This pattern usually bonds to the backing with rigid steel ties or 8-inch-thick stretcher units   when   available.In  large  wall  areas  or load-bearing  construction,  insert  steel  pencil  rods  into the horizontal mortar joints as reinforcement.The English cross or Dutch bond is a variation of the  English  bond.  It  differs  only  in  that  the  joints between the stretchers in the stretcher courses align vertically. These joints center on the headers in the courses  above  and  below.When  a  wall  bond  has  no  header  courses,  use metal  ties  to  bond  the  exterior  wall  brick  to  the backing  courses.

Masonry Cement

Masonry cement is now available without the need for lime.  Until recently, finding a safe alternative to replace lime in stucco, plaster, grout, and mortar was a difficult proposition.  Type S lime has been a long time staple for those requiring their mix to remain fluffy and sticky.  Afterall, workability is a must.  But finally, there’s a safe alternative that won’t burn skin, irritate eyes, or get you all choked up.

SYNLIME™, from Admix International, is a safe 100% complete lime replacement.  Unlike the failed attempts of liquid additives or powdered lime reducers – SynLime™ is a COMPLETE lime replacement that also eliminates the need for other lime additives such as fly ash, clay, diatamaceous earth, etc.  And SynLime™ doesn’t reduce workability.  SynLime™ makes the mix fluffy, sticky, & very workable!!

WOC – MIP Award Winners

SYNLIME™ cement concentrates take home best of show at this years World of Concrete & Masonry trade show held in Las Vegas, NV.

SYNLIME™  cement modifiers replace 100% of the lime used in stucco, plaster, grout, mortar, and other cementitious materials.  Demanded by thousands in the block, brick and tile trades.

1 LB (1 bag) of SYNLIME™ admixture replaces 25 LBS of hydrated lime & produces significantly higher PSI levels. This revolutionary Lime-Free™ Technology is recognized as a GREEN Building Material and is biodegradable, non-caustic, non-corrosive, non-carcinogenic, and non-toxic. SYNLIME™ patented formulas contain no hydrated lime, no nitrates, no phosphates, no phenols, and no VOCs.

The SYNLIME™ Difference:

  • Superior Workability
  • Stronger PSI
  • Reduced Cost
  • Safe Certified
  • Green Product
  • 1:25 Compact Formula

Is there a safe alternative to lime in mortar?

Until recently, finding a safe alternative to replace lime in stucco, plaster, grout, and mortar was a difficult proposition.  Type S lime has been a long time staple for those requiring their mix to remain fluffy and sticky.  Afterall, workability is a must.  But finally, there’s a safe alternative that won’t burn skin, irritate eyes, or get you all choked up.

SYNLIME™, from Admix International, is a safe 100% complete lime replacement.  A comparison to Type S Lime reveals some amazing differences:

SYNLIME™ is specifically formulated to produce high plasticity and excellent water retention.  The end result is a more workable mix with higher PSI levels that is clean, safe, and worker friendly.  Its increased bonding strength to foam and wire is also superior to lime.   Is there a safe alternative to lime in mortar?  The answer is a resounding yes… SYNLIME™.

The Toxic Effects of Mason’s Lime

Cement Lime Burns

Lime on the jobsite is an extremely caustic material, and when wet, produces a pH of 12.  Wearing protective goggles, gloves, and clothing should be followed at all times.  Protecting bare skin & eyes from risk of splatter should be given top priority.  It’s always a good idea to have clean water on hand in case of accidental contact.  Skin can be neutralized with a very mild acid such as lemon juice or even vinegar. Repeatedly flushing the eyes with fresh water for several minutes is recommended.  Consulting with a medical professional is also advised.

The farmful effects of lime are far reaching and caution should be used under all circumstances.  Because lime is heavily used in the construction trades, it’s difficult to escape contact completely.  Those who risk exposure to lime include tradesmen in the following industries; masonry, stucco, tile, landscape, plaster, and plumbing, to name a few.  Because lime makes the mix more workable, fluffy, and sticky, it’s charactieristics are very desirable.

THE HISTORY OF LIME

Some of the earliest known examples of lime use for building purposes are in early Egyptian buildings (primarily monuments). Some of these examples in the chambers of the pyramids, which date back to around 2000 B.C., are still hard and intact. Archaeological digs carried out on the island of Malta have shown that in places like Tarxien and Hagar, lime stucco was also used as a binder to hold stone together as well as for decoration at sites dating back as far as 3000-2500 B.C.

Ancient Chinese used slaked lime in the construction of The Great Wall of China and in other structures built throughout China during the Ming dynasty.

Lime Substitute for Mortar Mix

We build a lot of block fences and walls around our area and therefore mix a lot of mortar. Me and many of my workers were tired of mixing batches of mortar using lime and getting that itching irritating feeling on our skin. We decided to try one of the lime substitutes and after some looking around we settled on SynLime, mainly because it was easy, it only weighs one pound. Also, for us it’s a local company so if we had any problems we knew where to go. When we mixed up our batch of mortar we poured the pack of SynLime in instead of lime. I’ll tell you, its nice pouring a one pound pack in the mixer rather than hoisting a 50 pound bag. We were surprised how easy it mixed and how well it spread. It was great to work with. The package says it has a stronger PSI than lime. We will see…so far so good.  I’m happy to report no more itching, scratching, or lime burns.

James T.
PHX, AZ