PORT ANCHORS
LIME GROUTS FOR HISTORIC MASONRY
VoidSpan Technologies LLC

VoidSpan Technologies LLC pozzolanic hydraulic lime grouts and binders are formulated for compatibility with historic masonry and early concrete, combining lime and pozzolan with minimal chemical admixture to achieve ultra-low shrinkage and controlled hydraulic cure. The system balances the permeability and accommodating behavior of traditional lime with the practical demands of modern installation, producing breathable, sacrificial materials that bond tenaciously without introducing corrosive or incompatible components. Careful proportioning supports anaerobic reaction while avoiding residual bleed, a common issue in non-hydraulic lime applications. Applications include injection, gravity grouting, crack filling, and bonding of reconstructed masonry, where durability, frost resistance, and predictable structural performance are required.

VoidSpan Technologies LLC
(Masonry Restoration
Products)
60 Washington Street
Salem, MA 01970
800.966.8643
VoidSpan Technologies LLC
VoidSpan Technologies LLC

VoidSpan Technologies LLC, based in Salem, Massachusetts, develops and supplies an integrated masonry restoration system grounded in engineering practice and historic preservation experience. The company’s approach combines pozzolanic hydraulic lime grouts, mortars, and binders with port-based sock anchors adapted from Cintec technology, enabling inspection, cleaning, pre-wetting, and controlled injection through a single installed anchor. Product lines include PHL injection and gravity grouts, fine pointing mortars, custom binders, lightweight aggregate, anchors, and specialized installation equipment. Applications include wythe reconnection, stone rebonding, crack injection, and deep void consolidation. Training, certification, and delegated design services support consistent execution across complex rehabilitation projects.

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COMPANY FULL DETAILS

VoidSpan Technologies LLC

COMPANY OVERVIEW

VoidSpan Technologies LLC, headquartered in Salem, Massachusetts, develops integrated masonry restoration systems for historic preservation applications. The company’s work is grounded in engineering practice and field experience, with a focus on stabilizing, rebonding, and conserving existing masonry through compatible materials and controlled installation methods.

PRIMARY PRODUCT SCOPE

  • Pozzolanic Hydraulic Lime (PHL) Injection Grouts
  • Gravity Feed Hydraulic Lime Grouts
  • Crack Filling Grouts
  • Fine Pointing Mortars
  • PHL and PHLc Mortar Binders
  • Natural Cement Grouts
  • 1100 Series EXTEND Vacuum Saturated Expanded Shale Aggregate
  • Grout Injection Port Anchors
  • Masonry Anchors and Ties
  • Installation Tools and Equipment

HISTORIC PRESERVATION RELEVANCE

  • Masonry stabilization and consolidation
  • Rebonding of delaminated wythes
  • Injection grouting of voided walls
  • Crack repair and structural continuity
  • Conservation of historic stone and brick assemblies
  • Compatible repair of early concrete and masonry systems
  • Preservation-minded intervention with breathable, low-shrinkage materials

PHL PRODUCT TYPES

  • 600 Series PHLc70 Injection Grout — injectable grout for narrow cracks, voids, and port-anchor applications
  • 500 Series PHLc Gravity Feed Grout — flowable grout for gravity filling of cracks and cavities in historic masonry
  • 400 Series PHLc70 Crack Filler — crack repair material for smaller-scale filling applications
  • 300 Series Fine Pointing Mortar — fine mortar for butter joints and pointing work up to 1/4 inch
  • 200 Series PHLc Mortar Binder — binder for custom mortar formulations using selected sand
  • 100 Series PHL Mortar Binder — mortar binder for custom mix design applications
  • 1100 Series EXTEND Aggregate — lightweight expanded shale aggregate for extended grout and lime concrete applications

SYSTEM CHARACTERISTICS

  • Pozzolanic hydraulic lime formulations with minimal chemical admixture
  • Ultra-low shrinkage without reliance on aggressive shrinkage compensators
  • Breathability compatible with historic masonry and early concrete
  • High adhesion with sacrificial accommodation of movement
  • Freeze-thaw durability suited to exposed preservation conditions
  • Controlled hydraulic cure supporting practical field installation

ANCHORING AND APPLICATION METHODS

  • Grout Injection Port Anchors — sock-based anchors that permit inspection, cleaning, pre-wetting, and grout injection through a single installed anchor
  • Pressure Injection — repair of cracks, cavities, and separated masonry zones
  • Gravity Feed Grouting — filling of deeper voids and vertical sections
  • Wythe Reconnection — rebonding and stabilization of separated masonry wythes
  • Fragment Bonding — adhering loose fragments and fitted dutchman repairs
  • Reconstruction Support — filling collar joints and bonding between reconstructed wythes

SUPPORTING SERVICES

  • Contractor training and certification
  • Delegated design and detailing support
  • Equipment setup and installation guidance
  • Project-specific technical consultation

MANUFACTURER NOTE

Manufacturer information, product lines, features, availability, and specifications can change. Always review the manufacturer’s website and current product literature directly to confirm details before specifying or purchasing.

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